How to fix Login failed for user ''. (Microsoft SQL Server, Error: 18456)in windows 2008?

Hi All,
we are facing the Login fails issue .
how to resolve the bellow error , could you please suggested the possible ways .. ASAP
TITLE: Connect to Server
Cannot connect to ..
ADDITIONAL INFORMATION:
Login failed for user ' domain\name'. (Microsoft SQL Server, Error: 18456)
For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&EvtSrc=MSSQLServer&EvtID=18456&LinkId=20476
BUTTONS:
OK
Log Name: Application
Source: MSSQLSERVER
Date: 10/6/2011 1:56:28 PM
Event ID: 18456
Task Category: Logon
Level: Information
Keywords: Classic,Audit Failure
User: domain\name
Computer:
Description:
Login failed for user ' domain\name'. Reason: Token-based server access validation failed with an infrastructure error. Check for previous errors. [CLIENT: <local machine>]
RAM

I was hitting myself in the head with this problem for a couple of minutes.... Everything was fine on the DC and Domain itself.. I added the Domain admins Group Principal for which I am part of... I was getting this error ... Long History... Short
(Right Click and Run as Administrator took care of this for me..) UAC was the cause of the problem.
Cannot connect to XX-DB-XX3.
===================================
Login failed for user 'XXXXS\XXas'. (.Net SqlClient Data Provider)
For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&EvtSrc=MSSQLServer&EvtID=18456&LinkId=20476
Server Name: XX-DB-XX3
Error Number: 18456
Severity: 14
State: 1
Line Number: 65536
Program Location:
at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection)
at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj)
at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj)
at System.Data.SqlClient.SqlInternalConnectionTds.CompleteLogin(Boolean enlistOK)
at System.Data.SqlClient.SqlInternalConnectionTds.AttemptOneLogin(ServerInfo serverInfo, String newPassword, Boolean ignoreSniOpenTimeout, Int64 timerExpire, SqlConnection owningObject)
at System.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover(String host, String newPassword, Boolean redirectedUserInstance, SqlConnection owningObject, SqlConnectionString connectionOptions, Int64 timerStart)
at System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(SqlConnection owningObject, SqlConnectionString connectionOptions, String newPassword, Boolean redirectedUserInstance)
at System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, Object providerInfo, String newPassword, SqlConnection owningObject, Boolean redirectedUserInstance)
at System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection)
at System.Data.ProviderBase.DbConnectionFactory.CreateNonPooledConnection(DbConnection owningConnection, DbConnectionPoolGroup poolGroup)
at System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection)
at System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory)
at System.Data.SqlClient.SqlConnection.Open()
at Microsoft.SqlServer.Management.SqlStudio.Explorer.ObjectExplorerService.ValidateConnection(UIConnectionInfo ci, IServerType server)
at Microsoft.SqlServer.Management.UI.ConnectionDlg.Connector.ConnectionThreadUser()

Similar Messages

Login failed for User (Microsoft SQL Server, Error:18456)

Hi,
I am using SQL SERVER 2008. I was login through Windows Authentication and Unknowingly I have
deleted admin user (With name of my Computer e.g. "ABC-PC\ABC" ) under security=>Logins and restarted the SQL Server.
Now I am not able to connect to server using Windows as well as SQL Server Authentication Mode.
Please help me How can I create the same User again?
OR How can I connect to server using Windows or Sql Server Authentication??

as
you confirmed its sql 2008 , you have only below choices :
you
can ask anyone who manages/developer
who installed this server
your DBA should be able to help

Cannot connect to SERVER. Login failed for user 'DOMAIN\user'. (Microsoft SQL Server, Error 18456) - SQL Server 2012 on Windows Server 2008 R2

I've seen multiple blogs and forums with similar problems and SQL 2012 or 2008. But no solutions that work for me.
I have installed SQL Server in mixed mode (SQL and Windows authentication). I can create new Login accounts in either mode. However, I cannot get an AD security group Login account to work. I am trying to add group 'DOMAIN\Domain Admins' or 'SERVER\Administrators'
as a Login so that any of the domain's administrator accounts can open SQL Server Management Studio and act as an 'sa' account on this server.
I have deleted the SQL account 'DOMAIN\Domain Admins'.
I have restarted SQL.
I have restarted the Win2K8r2 server.
I have launched SSMS as Administrator from the desktop of SERVER.
I have launched SSMS as another user (and used 'DOMAIN\user' to lauch it) from the desktop of SERVER.
I can create a login account named 'DOMAIN\user' (who happens to be a member of the 'DOMAIN\Domain Admins' group) and give this account 'sa' security, and when I do that, this account works as expected...
How do I add a security group as a Login account and give all members of that group the ability to be an 'sa' account?

Hi geoperkins,
Are you getting the following error message?
Error: 18456, Severity: 14, State: 11
Login failed for user <Domain\user>. Reason: Token-based server access validation failed with an infrastructure error.
If that is the case, the issue could be due to that the Windows login has no profile or that permissions could not be checked due to UAC. Please disable UAC firstly and check if it is successful to log in SQL Server.
Another reason could be that the domain controller could not be reached. You may need to resort to re-creating the login. Create a new group in AD, add users to the new group, then add the group to the local admin group and create login for the group in SQL
Server.
There is a connect item describing similar issue for your reference.
https://connect.microsoft.com/SQLServer/feedback/details/680705/cant-login-to-sql-using-windows-authentication-when-user-is-in-a-domain-security-group
For more details about above error, please review the following blog.
http://sqlblogcasts.com/blogs/simons/archive/2011/02/01/solution-login-failed-for-user-x-reason-token-based-server-access-validation-failed-and-error-18456.aspx
Thanks,
Lydia Zhang
Lydia Zhang
TechNet Community Support

Reports successfully execute but generate a login failed for user 'sa' err

I am running Crystal Reports Server XI R2. Classic ASP is used to generate embedded reports within our application. The crystal reports use ODBC to connect to a SQL Server 2005 database. The reports successfully generate in our Classic ASP application. However in SQL Server 2005, the following error messages are being generated each time a crystal report is ran:
- Login failed for user 'sa'.
- Error: 18456, Severity: 14, State: 8.
We know that we are passing the correct username/password to the crystal reports, becuase they execute successfully.
It appears that when the report is called, Crystal Reports appears to conect to SQL Server using a username/password that we didn't provide it at execution time, this fails and the SQL Server 'login failed for user' is generated. Then it runs the report using the username/password we provide and it successfully generates a report.
I have ran Profiler against the SQL Server Database and the 'Login failed for user 'sa' ' errors have a ApplicationName of either 'Seagate Crystal Reports' or 'Crystal Reports'. Therefore I know it is Crystal Reports generating these errors in SQL Server.
Does anyone have any ideas on how to stop these SQL Server 'Login failed for user 'sa' ' errors being generated?

What happens if you use Profiler when running the report using Crystal Report Designer?
If the report is ran through Crystal Report Designer, NO 'Login failed for user' error messages appear in profiler. Everything looks ok when ran in Designer.
Also, need to know what patch level you are on?
We are running Crystal Reports Server XI Release 2, Version: 11.5.8.8265
No additional patchs have been applied since Crystal Reports Server was installed.
We may try the SA account if one of the connections fail to log on with the credentials you provided. Verify the user you logged on with has rights to all tables.
The reports were running through our application using the SA account. The SA account has permissions to these tables. The reports do generate results and appear perfectly fine in the application. The issue is that when our application requests the report from Crystal Reports Server. Crystal Reports Server delivers the correct report to our application. However during the process to generate the report, 'login failed for user 'sa' ' errors are being generated in SQL Server 2005.
Also, I have tried creating a completely new SQL user called 'crystaluser'. I ran the report using Crystal Report Designer and used the crystaluser logon and saved the report. Then I ran the same report through our application. SQL Profiler will then display 'login failed for user 'crystaluser''.
Its seems as though Crystal Reports Server is first executing the report using the default SQL user saved with the report, but is either sending a blank password or no password at all. This generates the 'login failed for user' in SQL Server 2005. But it then uses the SQL username/password my application gives it and successfully generates the report. Of course this is only speculation.

Cannot connect to newly created SQL 2008 R2 instance. Login failed for user...

I'm not a SQL guy, just figuring my way around here...
I just created a new instance on an existing SQL server. The original instance works fine. On
Database Engine Configuration > Account Provisioning
I selected Windows authentication mode and added several users, myself among them.
Tried to log in with one my account and getting:
TITLE: Connect to Server
Cannot connect to SERVERNAME\INSTANCE.
ADDITIONAL INFORMATION:
Login failed for user 'domain\myusername'. (Microsoft SQL Server, Error: 18456)
Guidance/suggestions?
Thanks,
Scott

http://sqlserver-help.com/2014/07/08/help-how-to-find-cause-of-login-failed-for-user-error/
Balmukund Lakhani
Please mark solved if I've answered your question, vote for it as helpful to help other users find a solution quicker
This posting is provided "AS IS" with no warranties, and confers no rights.
My Blog |
Team Blog | @Twitter
| Facebook
Author: SQL Server 2012 AlwaysOn -
Paperback, Kindle

[Oracle][ODBC SQL Server Wire Protocol driver][SQL Server]Login failed for user 'RECOVER'

Hi,
We have exadata x3-2. I am seeing this error in alert log file frequently.
The db version: 11.2.0.3 On RAC on Linux 5.8 x86-64Bit
Errors in file /d01/oracle/TEST/11.2.0/admin/TEST1_dbtest/diag/rdbms/prod/TEST1/trace/TEST1_reco_11909.trc:
ORA-01017: invalid username/password; logon denied
[Oracle][ODBC SQL Server Wire Protocol driver][SQL Server]Login failed for user 'RECOVER'. {28000,NativeErr = 18456}
ORA-02063: preceding 2 lines from HIS_CUST
The file /d01/oracle/TEST/11.2.0/admin/TEST1_dbtest/diag/rdbms/prod/TEST1/trace/TEST1_reco_11909.trc
Contains many repeated lines like below
*** 2015-01-21 06:34:40.209
ERROR, tran=21.24.51311, session#=1, ose=0:
ORA-01017: invalid username/password; logon denied
[Oracle][ODBC SQL Server Wire Protocol driver][SQL Server]Login failed for user 'RECOVER'. {28000,NativeErr = 18456}
ORA-02063: preceding 2 lines from HIS_CUST
Could any please help why is this happening.
Thanks

Hi,
You have customers who are running distributed transactions using a gateway which need to be rolled back. However, the gateway has not been correctly configured for distributed transactions. To roll back a transaction on the SQL*Server database a connection is made as the user defined in the parameter HS_FDS_RECOVERY_ACCOUNT in the gateway init<sid>.ora file but this user has not been created in the SQL*Server database with the password defined in HS_FDS_RECOVERY_PWD. This user also needs to own the transaction log table.
I assume you are using the Database Gateway for SQL*Server (DG4MSQL) as the Database Gateway for ODBC (DG4ODBC) doesn't support distributed transaction.
If you have access to My Oracle Support have a look at this note -
How to Setup DG4MSQL to Use Distributed Transactions (Doc ID 227011.1)
Otherwise, check the Gateway documentation.
Regards,
Mike

"Login Failed for user" in Standard Report Creation Wizard

I am trying to create a report using the report wizard in CR 08. When I choose new connection ==> OLE DB(ADO)==>Microsoft OLE DB Provider for SQL Server and enter the Server and user ID (no password), I get the error "Login failed for users".
SQL State: 42000
[DataBase Vendor Code: 18456]
I was using CR 10 and called the 1-866 # and was told to try it wil CR 08 and Im getting the same error. I know the log on information is correct because I use the same server name and userID to login with SQL Server management studio and Visual Studio 08.
Please let me know what I can do to link CR to my SQL Database.
Thanks,
John

How is your user accessing the site?
Did you extend it to a different zone, and if so what authentication provider are you using for that zone or is it the same zone?
Looks like the domain is a workstation name? are they logging in with valid credentials for the WIN-IMH9QUCN1FU workstation, which may be different than what they usually log in as?
ieDaddy
Blog: http://iedaddy.com
Twit: @iedaddy

Com.microsoft.sqlserver.jdbc.SQLServerException Login failed for user '' ..

Hi All,
I have the following weird problem when trying to connect to MSSQL 2005 database using JDBC and windows authentication.
I am using the following command:
DriverManager.getConnection("jdbc:sqlserver://<<MACHINE IP>>:;database=<<DB NAME>>;integratedSecurity=true;","<<DOMAIN USER NAME>>","<<DOMAIN USER PASSWORD>>")and I get the following exception:
com.microsoft.sqlserver.jdbc.SQLServerException: Login failed for user ''. The user is not associated with a trusted SQL Server connection.
I tried to google this exception but all I can see is similar one but the exception also contain the user name. Please note that in the exception I get, the user name is not listed..
I also checked it with various connection strings (I also tried to put the user name and password in the connection string, using the parameters 'user' and 'password'), but I always get the same result.
Also, when I used SQL authentication I am able to connect to the SQL (after I remove the 'integratedSecurity' param).
The SQL server is configured to work with both SQL and Windows authentication- I am able to log in to the SQL (with Microsoft SQL server management studio express) with the same windows user.
The sqljdbc_auth.dll is also located in the class path.
Does anyone have any idea what I am doing wrong?
Thanks,
Uri

jschell wrote:
TheAvalanche wrote:
When I log in to the MySQL server, using windows authentication, I see that it use the same domain user I try to use via JDBC. Is there anything else I need to configure?
You need to load a sqljdbc_auth.dll (or more specifically: point to it with -Djava.library.path or add it to the path), as is explained in the Microsoft SQL Server JDBC documentation on integrated security: [http://msdn.microsoft.com/en-us/library/ms378428.aspx]
Interesting. One would hope that it would at least provide a different error message if it didn't find that.I don't know, I haven't used integratedSecurity much. With the DLL the JDBC driver will send the credentials of the currently logged in user to the database server, and maybe the parameter integratedSecurity=true is just an instruction to the database server to actually use those credentials for login if they are there, or maybe supplying a user name and password as the OP did will override the integratedSecurity setting and the DLL is never actually used.

Cannot open database "ReportServer" requested by the login. The login failed. Login failed for user 'USER LOGON'

I want to grant permissions to all domain users to view reports on our Report Server. Domain users are able to access our Report Server URL and folder, but when they click on a report item they get an error message:
"Cannot open database "ReportServer" requested by the login. The login failed. Login failed for user 'USER LOGON'"
I'm using windows authentication and configured the local service account in SSReportS Config Manager as the credentials to connect to the Report Server DB.
Can someone please help how I should properly do this step by step to give all domain users permissions to view a report in SSRS?
Thanks much! - Rookie DBA

Hi IWAR,
The error message "Cannot open database "ReportServer" requested by the login. The login failed. Login failed for user 'USER LOGON'" means the user 'USER LOGON' does not have permissions to access the "ReportServer" database.
To fix this issue, please verify that the user has a valid database user login. For more details, please refer to the following steps.
In SQL Server Management Studio, open Object Explorer and expand the Databases folder.
Expand the database in which to create the new database user.
Right-click the Security folder, point to New, and then click User.
On the General page, enter a name for the new user in the User name box.
In the Login name box, enter the name of a SQL Server login to map to the database user.
Click OK.
Reference:
http://technet.microsoft.com/en-us/library/ms156468(v=sql.105).aspx
Hope this helps.
Thanks,
Katherine Xiong
Katherine Xiong
TechNet Community Support

Login failed for user 'NT AUTHORITY\ANONYMOUS

Hi All
I have already gone thru lot of links, So appreciate if i can have some solution
I have 3 servers A, B and C . A and B are in same domain and C is in different domain. and I am sysadmin in all 3 servers and all have trusted connection with each other
1. All have tcp and named pipe enable
2. All 3 servers and all services including browser are up and running
3. When i connect any sql server from any Server using SSMS i am able to connect and (net_transport, auth_scheme = TCP , NTLM).
Now i create linked server at server B to Server C (C domain is different than A and B). When i login on Server B and try to run query on C its working fine. But after remote login to server A and connect sql server at B using SSMS when
i expand linked server to c i cant see databases and query is giving error "Login failed for user 'NT AUTHORITY\ANONYMOUS LOGON'"
I also tried to connect to all 3 server in ssms using forced named pipes but i am getting below error
"provider named pipes provider error 40 - Could not open connection to sql server"
My question :
1. I have to use domain account to use linked server from server A to connect SQLserver B to server C, How this can be done is this related to Double hop ??
2. Why i cant connect using forced Named pipe to any server using SSMS except local host
Thanks Saurabh Sinha http://saurabhsinhainblogs.blogspot.in/ Please click the Mark as answer button and vote as helpful if this reply solves your problem

Hello,
First, it is possible to use Kerberos delegation across trusted domains.
net_transport, auth_scheme = TCP , NTLM
This means something isn't correctly setup as you're defaulting back to NTLM. This should read Kerberos if your SPNs were setup correctly and authenticated properly. Check the SPNs and service accounts.
http://technet.microsoft.com/en-us/library/cc280744(v=SQL.105).aspx
1. I have to use domain account to use linked server from server A to connect SQLserver B to server C, How this can be done is this related to Double hop ??
To go across domains I'm not entirely sure on that part, but I can say it'd probably be easier if you did use a domain account as the service account.
2. Why i cant connect using forced Named pipe to any server using SSMS except local host
I'm not quite sure what you mean here. You can't connect through NP? Why the need for NP at all?
Sean Gallardy | Blog |
Twitter

Exception Message: The form cannot connect to the data source. Login failed for user 'NT AUTHORITY\ANONYMOUS LOGON'

When opening a form in SharePoint 12013 that was created from Infopath 2013, I get the following error.
You do not have permissions to access a database that contains data required for this form to function correctly.
An entry has been added to the Windows event log of the server.
Log ID:5566
When I go to the log files on the SharePoint server. I see the following error.
Exception Message: The form cannot connect to the data source. Login failed for user 'NT AUTHORITY\ANONYMOUS LOGON'
I am guessing this has something to do with the UDCX connection and the database.
Can anyone help me get this fixed?

Hi Jim,
Please check the following kb article when it occurs 5566errro with the UDCX conection file, try the method of using the Secure Store Service to store alternate credentials for the data connection method, or the method of stating the credentials
in the UDC file explicitly.
Also check if it could help with setting sql server as "SQL Server and Windows Authentication mode".
http://support.microsoft.com/kb/981684
Thanks
Daniel Yang
TechNet Community Support

MS SQL 2008 R2 Named instance: Login failed. Microsoft SQL server, Error: 18452) - Tryig to access using the FQDN assigned for the backup network card.

Hi,
I have a windows 2008 R2 Enterprise servers with standalone MS-SQL 2008 R2 named instance. The server is having two networks, once production and the second for backup. The server FQDN is resolving to the production IP. The backup NIC
DNS dynamic update is disabled and an "A" record is registered with the dns. While trying to connect to the instance using the management studio:
Successfuly able to connect using the instance name, the production hostname, production IP and backup IP.
but while trying to connect to the insance using the backup hostname getting the below error:
"Login failed. The login is an untrusted domain and cannot be used with windows authentication. (Microsoft SQL server, Error: 18452) "
This is required for the backup tool to get connected using the backup FQDN of the server.
Should I need to create a host name alias, request you to kindly assist me with the best recommedation to fix this.
http://blogs.msdn.com/b/dbrowne/archive/2012/05/21/how-to-add-a-hostname-alias-for-a-sql-server-instance.aspx

Hi,
It might be a kerberos issue. Check that there are valid SPN's registered using the setspn utility - http://technet.microsoft.com/en-us/library/cc731241.aspx
Thanks, Andrew
My blog...

BizTalk Powershell Provider Mount remote BizTalk drive: Login failed for user 'NT AUTHORITY\ANONYMOUS LOGON'

I've been dabbling in the Powershell BizTalk Provider Extensions for some automation of deployment and such. So far it's pretty cool on a local machine, but the real benefits to me would be to do it remotely. Does anyone have any experience in the with the
following issue?
My BizTalk Server and SQL Servers are on separate machines which I think is the issue, but I don't know how to resolve. I've tried to provided credentials to the New-PSDrive command, but get the following errors:
The provider does not support the use of credentials. Perform the operation again without specifying credentials.
I'm trying to manage a remote BizTalk instance. The machine running the script has biztalk fully configured and can connect
to the Target Server just fine. The issue comes when I try to mount the "BizTalk:" drive
Enter-pssession -computername myServer -configurationname microsoft.powershell32
$InitializeDefaultBTSDrive = $false;
Remove-PSSnapin -Name BizTalkfactory.PowerShell.Extensions;
Add-PSSnapin -Name BizTalkfactory.PowerShell.Extensions;
New-PSDrive -Name BizTalk -PSProvider BizTalk -Root "BizTalk:\" -Instance mySqlServer -Database BizTalkMgmtDb -Scope Global
When it get to the New-PSDrive I get the following error:
New-PSDrive : Login failed for user 'NT AUTHORITY\ANONYMOUS LOGON'.
+ CategoryInfo : InvalidArgument: (BizTalk:PSDriveInfo) [New-PSDrive], BtsException
+ FullyQualifiedErrorId : 0,Microsoft.PowerShell.Commands.NewPSDriveCommand
Has anyone experienced this and solved? The same error occurs when use Invoke-Command as well.

It seems that the PowerShell provider is not Microsoft Support, it is community supported through the CodePlex site -
http://psbiztalk.codeplex.com
Right, I posted there as well, but there is not much movement on the site. I was hoping to find if this larger community may have had some experience with the provider.

SqlException was caught: Login failed for user 'NT AUTHORITY\ANONYMOUS LOGON'.

Hi,
I have deployed an On-Premise SharePoint solution with event receiver to update external SQLDB. I'm using Visual Studio 2013 to create a SharePoint 2013 project on the same machine where SharePoint 2013 server is running. I was able to create
new items, but unable to update/delete. My event were fired accordingly however got choked on sqlConnectionlOpen() when attempting to update/delete with the following exception:
SqlException was caught: Login failed for user 'NT AUTHORITY\ANONYMOUS LOGON'.
Why would SharePoint uses SharePoint web application account my admin created to create and assumes NT AUTHORITY\ANONYMOUS LOGON account for update\delete? Any idea how to fix?
Appreciate your help.

I'm new to SharePoint development. I'm not familiar with SharePoint object model. Do I need to use it for working with external data? I used SPSecurity.RunWithElevatedPrivileges
block like you have suggested and is now working fine for both update/delete =)
My project is to develop a SharePoint site to work off external SQL DB. I tried BCS approach to work with external data but that didn't allow workflow/task feature.
Besides, there is no delete event where I can manually sync with external data when an item gets deleted when using SharePoint 2013 Designer. So using event receiver with SharePoint solution in VS2013 is the solution. Now that I am able to
propagate changes to external data store on item events, the new challenge is how do I over come SharePoint deployment conflict resolution (default? enforcement?) as each publish automatically deletes existing items in my lists and recreate? In another word,
I'm trying to replicate SharePoint list to external data store each transaction to keep them sync. Any thought would be greatly appreciated.

BCS - Message from External System : 'Login failed for user 'NT AUTHORITY\IUSR'.'.

Hello,
I have create a an external content type .
I Choose "Connect with user's Identity".
I create a external list that uses the ExternalContentType.
When I try open the external list from browser by User "TestUser" . I get the following error "Message from External System : 'Login failed for user 'NT AUTHORITY\IUSR'.'"
My Question :
I need to know why pass the credential "NT AUTHORITY\IUSR" to connect to the data base not the
current log in"TestUser" ? How Can I solve it ?
Thanks
Hema
ASk

Hi,
did you configure Kerberos delegation?
NTLM fails when you try to open external list from client computer, because SharePoint cannot pass user's identity - "Double Hop" issue.
Take a look at confguring Kerberos for SharePoint 2010 white paper
Download Configuring Kerberos Authentication for Microsoft SharePoint 2010 Products from Official Microsoft Download Center
http://www.microsoft.com/en-us/download/details.aspx?id=23176
Robi MCT Kompas Xnet d.o.o. Ljubljana | blog: http://xblogs.kompas-xnet.si | website: http://www.kompas-xnet.si
Slovenia
Please vote if you find reply useful or mark it as answer.
Thank you

How to fix Login failed for user ''. (Microsoft SQL Server, Error: 18456)in windows 2008?

Similar Messages

Maybe you are looking for