Provider-Hosted app intermittent 401 error

Hi All,
I've a PH high trust app which is working fine, but at times
(not always) I'm getting 401 un-authorzed error. This is very intermittent error occurs when the app trys to access sharepoint. when the user refreshes the page its working fine.
I've digged ULS log but couldn't find anything useful. However in event viewer found the below error.. I'm totally out of clues why its occurring only at times. Any help is appreciated. Thanks!
Event code: 3005
Event message: An unhandled exception has occurred.
Event time: 1/5/2015 8:39:08 AM
Event time (UTC): 1/5/2015 1:39:08 PM
Event ID: 26b14be284ca4488abb0a5bba127c4c1
Event sequence: 28
Event occurrence: 1
Event detail code: 0
Application information:
    Application domain: /LM/W3SVC/2/ROOT-1-130649382841483100
    Trust level: Full
    Application Virtual Path: /
    Application Path: C:\TestWeb\
    Machine name: APPSERVER
Process information:
    Process ID: 3408
    Process name: w3wp.exe
    Account name: Domain\ServiceAccount
Exception information:
    Exception type: WebException
    Exception message: The remote server returned an error: (401) Unauthorized.
   at System.Net.HttpWebRequest.GetResponse()
   at Microsoft.SharePoint.Client.SPWebRequestExecutor.Execute()
   at Microsoft.SharePoint.Client.ClientRequest.ExecuteQueryToServer(ChunkStringBuilder sb)
   at App.Pages.WebForm1.Page_Load(Object sender, EventArgs e)
   at System.Web.UI.Control.LoadRecursive()
   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
Request information:
    Request URL: https://appsSite.domain.com/Pages/DisplayPage.aspx?a=EU/gibbs/35&SPHostUrl=http://SPSite.domain.com/sites/TestSite
    Request path: /Pages/DisplayPage.aspx
    User host address: 10.x.x.x
    User: Domain\User
    Is authenticated: True
    Authentication Type: Negotiate
    Thread account name: Domain\ServiceAccount
Thread information:
    Thread ID: 14
    Thread account name: Domain\ServiceAccount
    Is impersonating: False
    Stack trace:    at System.Net.HttpWebRequest.GetResponse()
   at Microsoft.SharePoint.Client.SPWebRequestExecutor.Execute()
   at Microsoft.SharePoint.Client.ClientRequest.ExecuteQueryToServer(ChunkStringBuilder sb)
   at APP.Pages.WebForm1.Page_Load(Object sender, EventArgs e)
   at System.Web.UI.Control.LoadRecursive()
   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
Custom event details:

Hi,
According to your post, my understanding is that Provider-Hosted app get intermittent 401 error.
If you use IssuerId in provider-hosted application web.config, please make it a lowercase Guid string.
You need to make sure that the app certificate is added to the trusted certificate store.
In addition, you can turn off the HTTPS using PowerShell.
More information:
http://www.jamestsai.net/Blog/post/SharePoint-Provider-Hosted-App-401-Unauthorized-error-on-clientContextExecuteQuery().aspx
http://srichallagolla.blogspot.com/2013/01/sharepoint-2013-provider-hosted-high.html
Best Regards,
Linda Li
Linda Li
TechNet Community Support

Similar Messages

Provider-hosted Apps debug error: The remote server returned an error: (401) unauthorised

Hi,
Any help appreciated!!
I'm getting this error: "The remote server returned an error: (401) unauthorised when I debug a provider-hosted app. I get the error on this line:
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
See code below
I created a high trust development environment following the instructions provided here:
http://msdn.microsoft.com/en-us/library/office/fp179901(v=office.15).aspx and
http://msdn.microsoft.com/library/office/fp179923
I created a provider-hosted app with the intent to:
create a SharePoint list in the appweb
Use self-signed certificate, tokenhepler.cs and sharepointcontext.cs to retrieve current user context and access on SharePoint. (No changes were made to tokenhelper.cs and sharepointcontext.cs)
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What happens:
The app is deployed successfully to the Dev site
The SharePoint feature is deployed and activated
The default.aspx page of the remote web loads
The error (see image) is returned on clicking of the button
My environment is an on-premise SharePoint 2013 with AD and my dev box is standalone windows 8.1 running Visual Studio Professional 2013 Update 3.
The code block below is a copy of the default.aspx code-behind
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using Microsoft.SharePoint.Client;
using Microsoft.IdentityModel.S2S.Tokens;
using System.Net;
using System.IO;
using System.Xml;
using System.Data;
using System.Xml.Linq;
using System.Xml.XPath;
namespace Idea.GeneratorWeb
public partial class Default : System.Web.UI.Page
SharePointContextToken contextToken;
string accessToken;
Uri sharepointUrl;
protected void Page_PreInit(object sender, EventArgs e)
Uri redirectUrl;
switch (SharePointContextProvider.CheckRedirectionStatus(Context, out redirectUrl))
case RedirectionStatus.Ok:
return;
case RedirectionStatus.ShouldRedirect:
Response.Redirect(redirectUrl.AbsoluteUri, endResponse: true);
break;
case RedirectionStatus.CanNotRedirect:
Response.Write("An error occurred while processing your request.");
Response.End();
break;
protected void Page_Load(object sender, EventArgs e)
//// The following code gets the client context and Title property by using TokenHelper.
//// To access other properties, the app may need to request permissions on the host web.
var spContext = SharePointContextProvider.Current.GetSharePointContext(Context);
//var spContext = new ClientContext("MySPDevInstance");
//spContext.Credentials = new NetworkCredential("username", "password");
//using (var clientContext = spContext.CreateUserClientContextForSPHost())
// clientContext.Load(clientContext.Web, web => web.Title);
// clientContext.ExecuteQuery();
// Response.Write(clientContext.Web.Title);
string contextTokenString = TokenHelper.GetContextTokenFromRequest(Request);
if (contextTokenString != null)
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contextToken = TokenHelper.ReadAndValidateContextToken(contextTokenString, Request.Url.Authority);
// Get access token
sharepointUrl = new Uri(Request.QueryString["SPAppWebUrl"]);
accessToken = TokenHelper.GetAccessToken(contextToken, sharepointUrl.Authority).AccessToken;
// Pass the access token to the button event handler.
Button1.CommandArgument = accessToken;
protected void Button1_Click(object sender, EventArgs e)
// Retrieve the access token that the Page_Load method stored
// in the button's command argument.
string accessToken = ((Button)sender).CommandArgument;
if (IsPostBack)
sharepointUrl = new Uri(Request.QueryString["SPAppWebUrl"]);
// REST/OData URL section
string oDataUrl = "/_api/Web/lists/getbytitle('Diagrams In Idea Generator')/items?$select=Title,Diagram,SharingStatus";
// HTTP Request and Response construction section
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(sharepointUrl.ToString() + oDataUrl);
request.Method = "GET";
request.Accept = "application/atom+xml";
request.ContentType = "application/atom+xml;type=entry";
request.Headers.Add("Authorization", "Bearer " + accessToken);
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
// Response markup parsing section
XDocument oDataXML = XDocument.Load(response.GetResponseStream(), LoadOptions.None);
XNamespace atom = "http://www.w3.org/2005/Atom";
XNamespace d = "http://schemas.microsoft.com/ado/2007/08/dataservices";
XNamespace m = "http://schemas.microsoft.com/ado/2007/08/dataservices/metadata";
List<XElement> entries = oDataXML.Descendants(atom + "entry")
.Elements(atom + "content")
.Elements(m + "properties")
.ToList();
var entryFieldValues = from entry in entries
select new
Character = entry.Element(d + "Title").Value,
Actor = entry.Element(d + "Diagram").Value,
CastingStatus = entry.Element(d + "SharingStatus").Value
GridView1.DataSource = entryFieldValues;
GridView1.DataBind();
Any ideas what I might be doing wrong

Hi ,
Use the below code
Public string GetAccessToken(){
string sharePointSiteUrlHost = Page.Request["SPHostUrl"].Tostring();
string AccessToken = tokenHelper.GetS2SAccessTokenWithWindowsIdentity(sharePointSiteUrlHost, Request.LogonUserIdentity);
return accessToken;
Than initialize the ClientCOntext with the below Method
private static ClientContext GetClientContextWithAccessTokenString(string targetUrl, object accessToken)
ClientContext clientContext = new ClientContext(targetUrl);
clientContext.AuthenticationMode = ClientAuthenticationMode.Anonymous;
clientContext.FormDigestHandlingEnabled = false;
clientContext.ExecutingWebRequest +=
delegate(object oSender, WebRequestEventArgs webRequestEventArgs)
webRequestEventArgs.WebRequestExecutor.WebRequest.UserAgent = "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)";
webRequestEventArgs.WebRequestExecutor.RequestHeaders["Authorization"] =
"Bearer " + accessToken;
return clientContext;
use this clientCOntext and it will work.
Do not use
SharePointContextProvider
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The remote server returned an error :(401) unauthorized in Provider hosted app deployment

Hi,
We are trying to deploy the provider hosted app in server environment . we are getting the "The remote server returned an error :(401) unauthorized" error after deploy the app in server.
stack Trace:
[webException:Te remote server returned an error:(401) UnAuthorized.]
System.Net.HeepWebRequest.GetResponse().
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Same code is working fine in my Local dev environment.
If anyone have idea about this issue, please let me know.
Thank you,
Mylsamy

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Hi thumper, if you have access to InfoPath, you can add the form to a page using the InfoPath web part. Otherwise, use SP Designer with instructions below:
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Redirection error An error occurred while processing your request in provider-hosted app which is hosted in Windows Azure

Hello,
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protected void Page_PreInit(object sender, EventArgs e)
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Thanks,
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Hi,
For a better troubleshooting,
I suggest you do as the following:
Debug the code step by step to find the reason of the issue.
For the remote debug your app from Windows Azure, you need to download Azure SDK:
http://azure.microsoft.com/en-us/downloads/
After installing the SDK, it will have “Attach Debugger” for Azure web site, you
also need to set "Attach Debugger" to on in the Windows Azure Management Portal
More detailed information about how to debug provider-hosted app:
http://blogs.technet.com/b/speschka/archive/2013/11/25/debugging-sharepoint-apps-that-are-hosted-in-windows-azure-web-sites.aspx
Best regards,
ZhengyuGuo
Forum Support
Please remember to mark the replies as answers if they help and unmark them if
they provide no help. If you have feedback for TechNet Subscriber Support, contact
[email protected]
Zhengyu Guo
TechNet Community Support

Error occurred in deployment step 'Install app for SharePoint': Failed to install app for SharePoint. provider-hosted app sharepoint on premise

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0x0BA8 SharePoint Foundation         App Deployment                acjjg Medium The current user has System.Threading.Thread.CurrentPrincipal.Identity.Name
= 0#.w|perf\abraham.lincoln, System.Security.Principal.WindowsIdentity.GetCurrent().Name = NT AUTHORITY\IUSR, System.Web.HttpContext.Current.User.Identity.Name = 0#.w|perf\abraham.lincoln. dcf1d59c-94c5-5071-47bf-07cd3f2ead95
12/14/2014 23:54:27.39 w3wp.exe (0x2170)                       0x0BA8 SharePoint Foundation
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12/14/2014 23:54:27.39 w3wp.exe (0x2170)                       0x0BA8 SharePoint Foundation
App Deployment                ahkn9 High    Deleting App with fingerprint TJQrYuD5N+kEe38LZtl6wSs3Ak3yYvWcmwuNLTqtpdFzb4qSMopN3SWCRdWvntrKoM7qIS2S2llpA5omi8iHqQ==
on site 264dc389-d394-4985-a43c-ad91a383c0df dcf1d59c-94c5-5071-47bf-07cd3f2ead95
12/14/2014 23:54:27.39 w3wp.exe (0x2170)                       0x0BA8 SharePoint Foundation
App Deployment                ahkob High    The App with fingerprint TJQrYuD5N+kEe38LZtl6wSs3Ak3yYvWcmwuNLTqtpdFzb4qSMopN3SWCRdWvntrKoM7qIS2S2llpA5omi8iHqQ==
on site 264dc389-d394-4985-a43c-ad91a383c0df was to be deleted, but it did not exist dcf1d59c-94c5-5071-47bf-07cd3f2ead95
12/14/2014 23:54:27.41 w3wp.exe (0x2170)                       0x0BA8 SharePoint Foundation
App Deployment                abnqa Medium App Packaging: CreatePackage: There are 10 parts in the package. There are 1 package-part relationships
in the package. dcf1d59c-94c5-5071-47bf-07cd3f2ead95
12/14/2014 23:54:27.41 w3wp.exe (0x2170)                       0x0BA8 SharePoint Foundation
App Deployment                afyz6 Medium SPAppResources: ParseResources: No default resource file was found. dcf1d59c-94c5-5071-47bf-07cd3f2ead95
12/14/2014 23:54:27.41 w3wp.exe (0x2170)                       0x0BA8 SharePoint Foundation
App Deployment                afyzx Medium SPAppResources: ParseResources: no resource file relationships were found. dcf1d59c-94c5-5071-47bf-07cd3f2ead95
12/14/2014 23:54:27.41 w3wp.exe (0x2170)                       0x0BA8 SharePoint Foundation
App Deployment                aebgs Medium SPPackageUtility: ExtractPart: Creating directory 'C:\Users\abraham.lincoln.PERF\AppData\Local\Temp\71345ca6-3565-43d8-9017-2d3336965d8f\extract' dcf1d59c-94c5-5071-47bf-07cd3f2ead95
12/14/2014 23:54:27.41 w3wp.exe (0x2170)                       0x0BA8 SharePoint Foundation
App Deployment                aebgt Medium SPPackageUtility: ExtractPart: Creating file 'C:\Users\abraham.lincoln.PERF\AppData\Local\Temp\71345ca6-3565-43d8-9017-2d3336965d8f\extract\AppManifest.xml' dcf1d59c-94c5-5071-47bf-07cd3f2ead95
12/14/2014 23:54:27.41 w3wp.exe (0x2170)                       0x0BA8 SharePoint Foundation
App Deployment                ajddw Medium SPPackageUtility: ExtractPart: Part stream length is '1072'. dcf1d59c-94c5-5071-47bf-07cd3f2ead95
12/14/2014 23:54:27.41 w3wp.exe (0x2170)                       0x0BA8 SharePoint Foundation
App Deployment                ajddz Medium SPPackageUtility: ExtractPart: Length is '1072', not locking before copying the stream. dcf1d59c-94c5-5071-47bf-07cd3f2ead95
12/14/2014 23:54:27.41 w3wp.exe (0x2170)                       0x0BA8 SharePoint Foundation
App Deployment                aebgt Medium SPPackageUtility: ExtractPart: Creating file 'C:\Users\abraham.lincoln.PERF\AppData\Local\Temp\71345ca6-3565-43d8-9017-2d3336965d8f\extract\AppIcon.png' dcf1d59c-94c5-5071-47bf-07cd3f2ead95
12/14/2014 23:54:27.41 w3wp.exe (0x2170)                       0x0BA8 SharePoint Foundation
App Deployment                ajddw Medium SPPackageUtility: ExtractPart: Part stream length is '3540'. dcf1d59c-94c5-5071-47bf-07cd3f2ead95
12/14/2014 23:54:27.41 w3wp.exe (0x2170)                       0x0BA8 SharePoint Foundation
App Deployment                ajddz Medium SPPackageUtility: ExtractPart: Length is '3540', not locking before copying the stream. dcf1d59c-94c5-5071-47bf-07cd3f2ead95
12/14/2014 23:54:27.41 w3wp.exe (0x2170)                       0x0BA8 SharePoint Foundation
App Deployment                aidi7 Medium SPIconAppPartValidator: IsSupportedFormat: image raw format is 'b96b3caf-0728-11d3-9d7b-0000f81ef32e'. dcf1d59c-94c5-5071-47bf-07cd3f2ead95
12/14/2014 23:54:27.42 w3wp.exe (0x2170)                       0x0BA8 SharePoint Foundation
App Deployment                afyz6 Medium SPAppResources: ParseResources: No default resource file was found. dcf1d59c-94c5-5071-47bf-07cd3f2ead95
12/14/2014 23:54:27.42 w3wp.exe (0x2170)                       0x0BA8 SharePoint Foundation
App Deployment                afyzx Medium SPAppResources: ParseResources: no resource file relationships were found. dcf1d59c-94c5-5071-47bf-07cd3f2ead95
12/14/2014 23:54:27.42 w3wp.exe (0x2170)                       0x0BA8 SharePoint Foundation
App Deployment                aebgt Medium SPPackageUtility: ExtractPart: Creating file 'C:\Users\abraham.lincoln.PERF\AppData\Local\Temp\71345ca6-3565-43d8-9017-2d3336965d8f\extract\featurecc1deab7-efdf-4cc2-80ae-60e073577d64.xml' dcf1d59c-94c5-5071-47bf-07cd3f2ead95
12/14/2014 23:54:27.42 w3wp.exe (0x2170)                       0x0BA8 SharePoint Foundation
App Deployment                ajddw Medium SPPackageUtility: ExtractPart: Part stream length is '321'. dcf1d59c-94c5-5071-47bf-07cd3f2ead95
12/14/2014 23:54:27.42 w3wp.exe (0x2170)                       0x0BA8 SharePoint Foundation
App Deployment                ajddz Medium SPPackageUtility: ExtractPart: Length is '321', not locking before copying the stream. dcf1d59c-94c5-5071-47bf-07cd3f2ead95
12/14/2014 23:54:27.42 w3wp.exe (0x2170)                       0x0BA8 SharePoint Foundation
App Deployment                aebgt Medium SPPackageUtility: ExtractPart: Creating file 'C:\Users\abraham.lincoln.PERF\AppData\Local\Temp\71345ca6-3565-43d8-9017-2d3336965d8f\extract\elements4d87f314-4b0a-4b89-8a7e-9cb73c99f25f.xml' dcf1d59c-94c5-5071-47bf-07cd3f2ead95
12/14/2014 23:54:27.42 w3wp.exe (0x2170)                       0x0BA8 SharePoint Foundation
App Deployment                ajddw Medium SPPackageUtility: ExtractPart: Part stream length is '849'. dcf1d59c-94c5-5071-47bf-07cd3f2ead95
12/14/2014 23:54:27.42 w3wp.exe (0x2170)                       0x0BA8 SharePoint Foundation
App Deployment                ajddz Medium SPPackageUtility: ExtractPart: Length is '849', not locking before copying the stream. dcf1d59c-94c5-5071-47bf-07cd3f2ead95
12/14/2014 23:54:27.42 w3wp.exe (0x2170)                       0x0BA8 SharePoint Foundation
App Deployment                aerhy Medium App Packaging - List of App Parts (count ='2'): Name='SPIconAppPart',Name='SPFeatureAppPart', dcf1d59c-94c5-5071-47bf-07cd3f2ead95
12/14/2014 23:54:27.42 w3wp.exe (0x2170)                       0x0BA8 SharePoint Foundation
App Deployment                aerhz Medium App Packaging - List of Deployment Groups (count ='3'): Name='SPIconDeploymentGroup',Name='SPTargetWebDeploymentGroup',Name='SPQuickLaunchDeploymentGroup', dcf1d59c-94c5-5071-47bf-07cd3f2ead95
12/14/2014 23:54:27.42 w3wp.exe (0x2170)                       0x0BA8 SharePoint Foundation
App Deployment                mq71 Medium Creating App with fingerprint TJQrYuD5N+kEe38LZtl6wSs3Ak3yYvWcmwuNLTqtpdFzb4qSMopN3SWCRdWvntrKoM7qIS2S2llpA5omi8iHqQ==
to site 264dc389-d394-4985-a43c-ad91a383c0df. dcf1d59c-94c5-5071-47bf-07cd3f2ead95
12/14/2014 23:54:27.44 w3wp.exe (0x2170)                       0x0BA8 SharePoint Foundation
App Deployment                afpd2 Medium Committing package with fingerprint TJQrYuD5N+kEe38LZtl6wSs3Ak3yYvWcmwuNLTqtpdFzb4qSMopN3SWCRdWvntrKoM7qIS2S2llpA5omi8iHqQ==
and data length 8010 to site 264dc389-d394-4985-a43c-ad91a383c0df. dcf1d59c-94c5-5071-47bf-07cd3f2ead95
12/14/2014 23:54:27.46 w3wp.exe (0x2170)                       0x0BA8 SharePoint Foundation
App Deployment                ajk9e Medium Writing 8010 bytes to database for app with fingerprint TJQrYuD5N+kEe38LZtl6wSs3Ak3yYvWcmwuNLTqtpdFzb4qSMopN3SWCRdWvntrKoM7qIS2S2llpA5omi8iHqQ== dcf1d59c-94c5-5071-47bf-07cd3f2ead95
12/14/2014 23:54:27.50 w3wp.exe (0x2170)

Hi Jerry,
I agree with Nikhil, I think you have posted partial ULS log, we could not find effective errors for the issue.
For Provider Hosted app in SharePoint server on-premise,
the TokenHelper class will try to access your Azure Security Principle by default.
Did you have a valid Azure account?
If not, the issue may be caused that you don't have a valid account, to resolve this issue, you can use
a valid Azure account or not going to use Azure Platform for hosting the app as the article
below.
http://pratapreddypilaka.blogspot.jp/2012/12/sharepoint-2013-avoiding-azure-on-dev.html
Thanks,
Jason
Jason Guo
TechNet Community Support

Provider-hosted app deployment error

Hi,
I am developing a provider-hosted app which programmatically adds the app part on Home page of the site. I wrote the code for adding the app part in App Installed event. It works fine when i debug it on my development site. Then i made a catalog site and
deployed it there following the instructions in this blog.
http://blogs.msdn.com/b/russmax/archive/2014/06/26/part-2-intro-to-provider-hosted-apps-develop-package-and-deploy.aspx
After deploying the app on app catalog, when i try to add the app, i get the following error.
Log Name: Application
Source: Microsoft-SharePoint Products-SharePoint Foundation
Date: 3/18/2015 5:44:17 PM
Event ID: 8311
Task Category: Topology
Level: Error
Keywords:
User: SP\Administrator
Computer: SP2013.SP2013.LOCAL
Description:
An operation failed because the following certificate has validation errors:
Subject Name: CN=SP2013.SP2013.LOCAL
Issuer Name: CN=SP2013.SP2013.LOCAL
Thumbprint: 9D3D48F8D7ED5AE4CB187BEB3319C3E65A36340C
Errors:
SSL policy errors have been encountered. Error code '0x2'..
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Microsoft-SharePoint Products-SharePoint Foundation" Guid="{6FB7E0CD-52E7-47DD-997A-241563931FC2}" />
<EventID>8311</EventID>
<Version>15</Version>
<Level>2</Level>
<Task>13</Task>
<Opcode>0</Opcode>
<Keywords>0x4000000000000000</Keywords>
<TimeCreated SystemTime="2015-03-18T12:44:17.912561500Z" />
<EventRecordID>24215803</EventRecordID>
<Correlation ActivityID="{3A58A90C-2A9C-4128-A4CF-D07A9FEB48E8}" />
<Execution ProcessID="980" ThreadID="688" />
<Channel>Application</Channel>
<Computer>SP2013.SP2013.LOCAL</Computer>
<Security UserID="S-1-5-21-2707663415-3900761612-1761970234-500" />
</System>
<EventData>
<Data Name="string0">CN=SP2013.SP2013.LOCAL</Data>
<Data Name="string1">CN=SP2013.SP2013.LOCAL</Data>
<Data Name="string2">9D3D48F8D7ED5AE4CB187BEB3319C3E65A36340C</Data>
<Data Name="string3">SSL policy errors have been encountered. Error code '0x2'.</Data>
</EventData>
</Event>
I am deploying the app with non-system user. Is there any any limitation of using app installed event in
app catalog or am i doing something wrong?

Hi,
The following blog for you to check:
SharePoint 2013 Domain Certificate for Provider-Host App Development Environment
http://rwcchen.blogspot.com/2013/12/sharepoint-2013-domain-certificate-for.html
Or try to add the following line within <system.net> tag
in your SharePoint site web.config:
<settings>
<servicePointManager
checkCertificateName="false"
checkCertificateRevocationList="false"/>
</settings>
Best Regards
TechNet Community Support
Please remember to mark the replies as answers if they help, and unmark the answers if they provide no help. If you have feedback for TechNet Support, contact
[email protected]
Thanks for the reply but I already tried the solution. My app works fine when i deploy it without app install event receiver but when i add the event receiver i face the error. Is there any limitation of using app install event receivers?

SharePoint 2013 Provider-Hosted App Installs, throws File Exists error.

I have a SP2013 Provider-hosted app with DevExpress controls that was working fine until just recently. I am getting the following error when I try to F5 DEBUG:
"Error occurred in deployment step 'Install app for SharePoint': The file exists."
The app actually installs and executes but the debugger detaches very quickly plus it is prompting with the nagging aforementioned message. There are no AppUninstall / AppInstall / AppUpgraded events being handled.
Thanks in advance.

I tried retraction, cleaning, reinstalling - nothing worked. I tried a new app in the site collection and a new app in a new site collection - still no luck. In the end the problem was more simple, but the "File exists" error was not helpful in determining
the root cause. Perhaps others will hit this thread and find the solution helpful. Visual Studio will typically switch automatically to "Run as Administrator" mode whenever debugging a SP App for 2013. In my case, it wasn't. I had one or two existing Apps
that never prompted me but ran fine and in this case, new apps weren't automatically running as the Administrator. After changing this behavior the app (and new apps) work as expected.

Provider hosted app error message: The remote server returned an error: (429) Too Many Requests.

Hi,
I have a customer running a provider hosted app and in Sharepoint 2013. Things have been working fine but recently they keep experiencing an issue where the all the app parts on the page show the following error message. Does anyone have an idea what
could be causing this problem and how I can fix it? The Sharepoint site and provider hosted app site are running on a Server 2008 R2 box with IIS 7.5.
Server Error in '/Test.Sharepoint.App' Application.
The remote server returned an error: (429) Too Many Requests.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Net.WebException: The remote server returned an error: (429) Too Many Requests.
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace:
[WebException: The remote server returned an error: (429) Too Many Requests.]
System.Net.HttpWebRequest.GetResponse() +8527180
Microsoft.SharePoint.Client.SPWebRequestExecutor.Execute() +58
Microsoft.SharePoint.Client.ClientRequest.ExecuteQueryToServer(ChunkStringBuilder sb) +975
Test.Sharepoint.AppWeb.Pages.LatestAnnouncement.GetLatestAnnouncement(Boolean showFullText) +610
Test.Sharepoint.AppWeb.Pages.LatestAnnouncement.Page_Load(Object sender, EventArgs e) +764
System.Web.UI.Control.LoadRecursive() +71
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3178
Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.18034
Impreza Software Development

Hi GuYumming,
I have checked the Sharepoint site using Fiddler and my X-SharePointHealthScore stays consistently on 1, I have even refreshed the site and had the "(429) Too Many Requests" error happen right in front of me whilst Fiddler is running and when I look at the
200 response for the Sharepoint site it is still showing "X-SharePointHealthScore: 1".
I assume because of this I do not need to make any of the changes suggested in your article above?
I have also been through the ULS logs and found the following 3 log entries that appear to relate to the issue but they do not really mean much to me so I am hoping that you can help:
Begin CSOM Request ManagedThreadId=59, NativeThreadId=12476
SPResourceTally(ClientServiceRequestDuration) value 1 + 150425 > 150000
ResourceBudgetExceeded, sending throttled status code. Exception=Microsoft.SharePoint.SPResourceBudgetExceededException: ResourceBudgetExceeded     at Microsoft.SharePoint.SPResourceTally.Check(Int32 value)
at Microsoft.SharePoint.SPAggregateResourceTally.Check(SPResourceKind kind, Int32 value)     at Microsoft.SharePoint.Client.SPClientServiceHost.OnBeginRequest()
Impreza Software Development

SharePoint 2013 Provider hosted App installation error

Hi All,
I am trying to install a provider hosted app in SharePoint 2013. Installation goes for about 15mins and get "Sorry, something went wrong
with adding the app. Click to retry."
Please find belw ULS details for Correlation ID:
Error when try to get access token when deploy AppInstanceId 7bcf1d9d-897a-48a1-b4f4-cd3120fd98a5 with AppPrincipalId i:0i.t|ms.sp.ext|[email protected]01b993b6. Exception=System.InvalidOperationException:
An unexpected error was returned from the delegation service. Error Code: 'invalid_client' Error Description: 'ACS65003: The clientId 'd12de581-316c-4224-b58b-e91ac2042150/www.SERVERNAME.DOMAIN.com@0d85160c-5899-44ca-acc8-db1501b993b6' is not a valid
service identity. Trace ID: 4a0c4974-94f4-4077-9a22-2ba5f0abb444 Correlation ID: 674d9839-686b-45f3-be46-31db4dc2a9d0 Timestamp: 2014-07-23 09:34:49Z'
at Microsoft.SharePoint.Administration.SPAzureAccessControlDelegationServiceClient.HandleUnexpectedError(SPAzureAccessControlDelegationServiceResponse delegationServiceResponse)
at Microsoft.SharePoint.ApplicationServices.SPApplicationContextAccessToken.GetResponseOrThrow[T](SPAzureAccessControlDelegationServiceClient delegationServiceClient, SPAzureAccessControlDelegationServiceResponse delegationServiceResponse)
at Microsoft.SharePoint.ApplicationServices.SPApplicationContextAccessToken.IssueApplicationContextAccessToken(SPServiceContext serviceContext, SPApplicationContextAccessTokenCreationParameters creationParameters)
at Microsoft.SharePoint.SPSecurityContext.SecurityTokenForApplicationContext(SPIdentityContext userIdentityContext, String applicationId, Uri applicationRealm, SPApplicationContextAccessTokenType applicationTokenType, SPApplicationDelegationConsentType
consentValue)
at Microsoft.SharePoint.SPServerToAppServerAccessTokenManager.GetAccessTokenForDeploymentTask(Guid siteId, SPUserToken userToken, String appPrincipalId)
at Microsoft.SharePoint.Lifecycle.SPAppPrincipalAccessTokenTask.<>c__DisplayClass1.<Deploy>b__0()
sudesh withanage

Hi sudesh,
According to your description, my understanding is that you encountered the error “An unexpected error was returned from the delegation service" when you try to add a SharePoint 2013 Provider hosted App.
As the error message says, the clientId 'd12de581-316c-4224-b58b-e91ac2042150/www.SERVERNAME.DOMAIN.com@0d85160c-5899-44ca-acc8-db1501b993b6' is not a valid service identity when your SharePoint try
to get access token via ACS. Is there any plans to develop a low trust mechanism for non-connected scenarios? i.e. low trust provider hosted apps with no external connection, like say for a Bank who lock down external access. Please follow the
steps as the blog to set development environment for SharePoint Low-Trust Apps:
http://blogs.msdn.com/b/besidethepoint/archive/2012/12/10/sharepoint-low-trust-apps-for-on-premises-deployments.aspx?PageIndex=1#comments
Best Regards,
Eric
Eric Tao
TechNet Community Support

Provider hosted app installed on SharePoint 2013 on premises is returning internal 500 error !

Hello,
I have deployed the basic provider hosted app on sharepoint 2013 on premises.
However when I try to run the app, its throwing an error on following as mentioned in screen:
It seems an authentication issue, would you please tell me how can I resolve it ?
Thank you in advance.
Kind Regards,
Dipti Chhatrapati

Hi,
According to your description, my understanding is that when you run provider hosted app in SharePoint 2013 on premise, the app occurs internal 500 error.
For using Managed .NET Client Object Model in Provider hosted app, it will need
TokenHelper.cs to get the ClientContext object like below:
private void RetrieveWithCSOM(string accessToken)
if (IsPostBack)
sharepointUrl = new Uri(Request.QueryString["SPHostUrl"]);
ClientContext clientContext =
TokenHelper.GetClientContextWithAccessToken(
sharepointUrl.ToString(), accessToken);
//Load the properties for the web object.
Web web = clientContext.Web;
clientContext.Load(web);
clientContext.ExecuteQuery();
//Get the site name.
siteName = web.Title;
//Get the current user.
clientContext.Load(web.CurrentUser);
clientContext.ExecuteQuery();
currentUser = clientContext.Web.CurrentUser.LoginName;
//Load the lists from the Web object.
ListCollection lists = web.Lists;
clientContext.Load<ListCollection>(lists);
clientContext.ExecuteQuery();
//Load the current users from the Web object.
UserCollection users = web.SiteUsers;
clientContext.Load<UserCollection>(users);
clientContext.ExecuteQuery();
foreach (User siteUser in users)
listOfUsers.Add(siteUser.LoginName);
foreach (List list in lists)
listOfLists.Add(list.Title);
More information:
https://msdn.microsoft.com/en-us/library/office/fp142381.aspx
Thanks
Best Regards,
Jerry Guo
TechNet Community Support
Please remember to mark the replies as answers if they help, and unmark the answers if they provide no help. If you have feedback for TechNet Support, contact
[email protected]

Provider hosted App Error: You do not have permission...

Hi everyone,
i'm using SharePoint online. I opened a provider hosted app and when I run this I get this error:
"Access denied. You do not have permission to perform this action or access this resource."
when I did debug I notice that it fall in this line:
webRequestEventArgs.WebRequestExecutor.RequestHeaders["Authorization"]
and "webRequestEventArgs.WebRequestExecutor.RequestHeaders"
is empty.
what can I do?
thank you!

i'm trying to add an item ti my list:
protected void Page_Load(object sender, EventArgs e)
//constant string SharePoint principal
string SharePointPrincipal = "00000003-0000-0ff1-ce00-000000000000";
var contextToken = TokenHelper.GetContextTokenFromRequest(Page.Request);
Uri hostWeb = new Uri(Page.Request["SPHostUrl"]);
string realm = TokenHelper.GetRealmFromTargetUrl(hostWeb);
string appOnlyAccessToken = TokenHelper.GetAppOnlyAccessToken(SharePointPrincipal, hostWeb.Authority, realm).AccessToken;
using (ClientContext clientContext = TokenHelper.GetClientContextWithAccessToken(hostWeb.ToString(), appOnlyAccessToken))
if (clientContext != null)
//ShariqTest is a custom List in my SharePoint site
var myList = clientContext.Web.Lists.GetByTitle("ListName");
ListItemCreationInformation listItemCreate = new ListItemCreationInformation();
Microsoft.SharePoint.Client.ListItem newItem = myList.AddItem(listItemCreate);
newItem["ColumnName"] = "Testing ";
newItem.Update();
clientContext.ExecuteQuery();
"[and the webRequestEventArgs.WebRequestExecutor.RequestHeaders["Authorization
is in TokenHelper.cs.
what do you think my problem is?

Provider Hosted app server error

Hello All,
I had created a provider hosted app with remote web app deployed in the same IIS server where sharepoint installed. I have used selfsigned certificates for trust. It works if i use visual studio IIS express to host remote web app.
But when I use Local IIS for hosting the web app, I am getting the following error. httpContext.Session[SPContextKey] is always null
Any help will be appreciated.
Vishnu

Check if below can help
http://sharepoint.stackexchange.com/questions/95151/provider-hosted-app-server-error
http://blogs.msdn.com/b/kaevans/archive/2013/09/24/introducing-sharepointcontext-for-provider-hosted-sharepoint-apps.aspx
http://blogs.msdn.com/b/officeapps/archive/2013/11/07/announcing-the-new-sharepointcontext-helper-in-apps-for-sharepoint-2013.aspx

ClientContext.ExecuteQuery(); gives access denied error in sharepoint provider hosted app

Hi Team,
I am using the sharepoint office 365 to build the provider hosted app.
Please find the below code to access the data from sharepoint
var siteUri1 = new Uri("https://site.sharepoint.com/sites/site1/");
var realm = TokenHelper.GetRealmFromTargetUrl(siteUri1);
var accessToken1 = TokenHelper.GetAppOnlyAccessToken(TokenHelper.SharePointPrincipal, siteUri1.Authority, realm).AccessToken;
using (var clientContext = TokenHelper.GetClientContextWithAccessToken(siteUri1.ToString(), accessToken1))
Web web = clientContext.Web;
clientContext.Load(web.Webs);
clientContext.ExecuteQuery();
var webdetails = web;
clientContext.ExecuteQuery(); this line gives the below error
An exception of type 'Microsoft.SharePoint.Client.ServerUnauthorizedAccessException' occurred in Microsoft.SharePoint.Client.Runtime.dll but was not handled in user code
Additional information: Access denied. You do not have permission to perform this action or access this resource.
Please help me on this.

Thanks for your reply
I already included AllowAppOnlyPolicy="true" in the
AppManifest.xml file.
Below line always gives the null value.
string contextTokenString = TokenHelper.GetContextTokenFromRequest(Request);Please help me on this. I am new the the apps.

How to Use Office 365 api in Provider Hosted App

Hi,
I want to use outlook api in SharePoint Provider Hosted App.
when I use :-
$.ajax({
url: 'https://outlook.office365.com/api/v1.0/me/contacts',
type: 'GET',
beforeSend: function (xhr) {
xhr.setRequestHeader('Authorization', 'Bearer');
Accept: "application/json",
"client-request-id": "9de3d763-a8d9-4433-92f3-096d6be36d86",
success: function () {
alert("Welcome to Outlook ")},
error: function (e) {
alert(' Error121212 :' +e);
Error:-
XMLHttpRequest cannot load https://outlook.office365.com/api/v1.0/me/contacts. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'https://localhost:44309' is therefore not allowed access. The response had HTTP status code
401.
Please Provide me a good example.
Thanks in Advance

Hi SharePlus,
You probably want to use the Office 365 API's to authenticate and communicate with the API's.
There's several resources available for this:
Ultimate LinkRoll for Getting Started with the Office 365 API's
Download Office 365 API Tools for Visual Studio 2013
Getting Started with O365 Dev - Communicate with Exchange
If you don't want to use the pre-compiled typed objects in the Office 365 API's for communicating with the Mail service (Exchange), you can always just make sure to handle the authentication properly and then construct your queries as raw queries, like Chaks
describes here: http://chakkaradeep.com/index.php/working-with-office365apis-the-raw-version/
Also, as a general rule; When working with anything Office 365, you should always keep an eye out for the example code, articles and news published from the Office 365 Patterns & Practices team here: https://github.com/OfficeDev/PnP
I hope this will guide you in the right direction :-)
Tobias Zimmergren
Microsoft MCP, MCTS, MCT, MVP (SharePoint)
Blog: www.zimmergren.net
Twitter: twitter.com/zimmergren
Corporate site: www.tozit.com

Provider-Hosted app intermittent 401 error

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