IOS 6 breaks corp proxy authentication

Hi All.
I recently updated my iPhone 4S from iOS 5.1.1 to iOS 6.
I now can no longer access the internet through our corporate web proxy. In fact it's displaying the same symptoms it used to display under iOS 5.1 and earlier (fixed in 5.1.1).
The symptoms are:
* The proxy logs show a 407 auth challenge has been sent to the client.
* the device does not respond using the username and password I assigned to the proxy for the WiFi profile.
* occasionally the device pops up a login dialog for the proxy, but fails to auth even when I enter correct credentials
So, basically it is ignoring the creds I entered. It's a real shame this bug crept back into 6 after it was finally fixed.
The proxy server is our own product - WinGate - so we can see exactly what is going on, and we do know a bit about proxy auth. If anyone from Apple wants to fix this once and for all, please get in touch. I've seen other posts about using auto proxy detect (which then doesn't have credentials), but that didn't work either.
Posts about attempting to access a success.html file on apple's servers and assuming a captive portal if it fails seems to me very misguided, I certainly hope Apple didn't take that disastrous approach. Proxy auth is deterministic, and requires no assumptions to be made at all.

Shockingly, this is still a problem as of iOS 8.0.2. Have you been able to work around this?

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Proxy authentication screen blinks with ios 7

Have a router that has VPN to my work's network.
When I want to connect to our company network, I used to get a proxy authentication screen to enter user name and password.
After I updated my iPad-2 to IOS 7, the authentication screen just blinks and goes away. Then I have a message that says I do not have a network connection.
Although I can go to the internet, I can not get into my company's network.
Connection is WPA Enterprise.
It used to work just fine with the previouse IOS.
Please advise,
Thanks
Tom

Hello, Harmeet Singh.
Thank you for visiting Apple Support Communities.
Here are the best troubleshooting resources to reference when experiencing this issue.
iOS: Not responding or does not turn on
http://support.apple.com/kb/TS3281
Display has no backlight or dark screen
Toggle the ringer switch to see if the unit vibrates. If it does, it could be that iPhone is getting power, but is not displaying any image.
Try turning iPhone off and then on again.
While connected to the iPhone charger, try to reset the iPhone.
If the low-battery screen appears, charge the iPhone.
iPhone: Hardware troubleshooting
http://support.apple.com/kb/ts2802
If the issue persists, see the section labeled issue not resolved.
Cheers,
Jason H.

Is IOS FW Proxy Authentication Compatible w/ HTTPS server?

Can proxy authentication be triggered via https as well as http? The document below on auth proxy only mentions http.
But the following document on https shows that https is triggered by adding secure-server parameter to the end of "ip http". "ip http secure-serer". If anyone's tried this out - would be interested to know the result. Thanks.
http://www.cisco.com/en/US/products/sw/iosswrel/ps1835/products_configuration_guide_chapter09186a00804c3d75.html
http://www.cisco.com/en/US/products/sw/iosswrel/ps1833/products_feature_guide09186a00800d9eee.html

I have tried this and it works. If you specify "ip http secure-server" command, the "Username/Password" dialogue between the end client and the authenticating agent will be secured. Otherwise the username/password is sent in clear text.

Proxy authentication

We use a SQUID proxy server in our company network.
For ensuring legal compliance we use proxy user authentication.
Configuring our IOS 6.1.2 devices for our wireless networks does not work in any of the possible ways:
- no Proxy doesn't work - as expected
- manual proxy with credentials does not work for all apps - but for some
- Auto-Proxy does not help our users since there is no way to store the credentials in that case
We found out that besides the configuration of ios it is every single app developer having to care about proxy authentications issues in his apps.
As an IT department manager having to care for all those devices i have a strong wish:
Please, Apple, make all those apps in the appstore behave well in enterprise proxy authentication environments by clear design rules and checks.
Help people using ios devices in business environments for business purposes!
Thank you very much!
Regards, Bernd Gewehr

This is User's Forum. Unfortunately Apple does not read this.
Suggest use of
http://www.apple.com/feedback/

IOS 5/iPad 2 proxy settings not being remembered

I recently upgraded one of my iPad 2's to iOS 5, but I seem to be having an issue the Wi-Fi connection in work. The wireless network has a hidden SSID and it requires some Manual proxy settings being put into the wireless config.
When I input the relevant information it seems to hold fine for a few seconds but when I go into Safari it prompts for an https:// proxy username and password, if I input the correct details it just prompts again and no matter how many times I input the correct information it still prompts for it over and over again, to the point that you just have to switch the wireless off to stop the message from flashing up.
I have an iPad 2 on iOS 4.3.5 and the same setting work perfectly fine on this iPad 2 but will not work on iOS 5.
I have even tried a Linksys Wireless Access Point plugged into the network with no hidden SSID etc and I still get the same thing on the iOS 5 iPad 2 it continually prompts for the proxy details, but the iOS 4.3.5 iPad2 works fine.
Is this a known glitch or am I just being a total idiot : ( ?

There are no work-arounds, there are no fixes, and no... updating to iOS 5.0.1 will not help you. This is broken and Apple needs to fix it. No "consumerisation" will not win, and our Network admin will NOT remove proxy authentication from the network to make it work. That's what Apple want me to do, and it's not happening. Here's the deal:
1. There is a difference between a HTTP proxy and a HTTPS proxy, of course, and Apple ONLY let you supply a configuration (using "Manual") for a HTTP connection. Not HTTPS. That's the problem.
2. As such, any request to a secure site (which a LOT of apps use, including Apple's own in-built ones) will fail. As soon as the connection for HTTPS is required, you will get an authentication prompt. The iPhone/iPad CAN NOT use the credentials assigned to the HTTP Proxy for the HTTPS Proxy... they are different. On a Mac (running OSX), these are definately two separate items you need to configure in the network settings and store in the KeyChain. Aple either need to write the "Manual" Proxy setting as both a HTTP and HTTPS connection (using the same KeyChain entry), or allow a HTTPS Proxy to also be specified. I favour the first option for simplicity - though it is not "standard".
3. In iOS4, Apple also supplied a "Manual" setting with a "HTTP Proxy" setting. The big difference in that case is that requests to HTTPS sites, which would require a HTTPS Proxy connection (which was not supported), were simply IGNORED or attempted to get the data using ANONYMOUS access... which in almost all enterprises with proxy servers is flat-out denied. In iOS4 your app would have a spinning wheel forever or would crash when trying to hit a HTTPS site for updates etc. In iOS4 more apps simply didn't work, but failed in a nice and quiet way. This has changed to "allowed" in iOS5, as it now is HTTPS aware and attempts to respond to Proxy auth challenges... but Apple have not provided a way to store a username and password for that connection, so you get an authentication box.
After I installed iOS5, I had my iPad on my desk all day but didn't get a chance to use it. That night I had about forty (40) of those prompts to cancel before I could use the device. Very frustrating. Even if you enter the correct username and password the million times it asks for it, you STILL get prompts... all the time. There is no good answer. If you're lucky enough to fluke a configuration and set of apps that only require HTTP connections, then you'll have no issues. That, from my experience, would be exceedingly rare.
There are three (3) possible answers here;
a) Get the network administrator to turn off authenticated proxy for the entire site. Good luck with that one.
b) Implement a solution using DHCP/TMG/Websense (or whatever your network and security products may be), or use a product like NetBox Blue. If you don't have a solution like NetBox, you'll need to set DHCP reservations for each device by MAC Address, then configure that IP Range to be "unauthenticated" in terms of the proxy server/firewall, and then specify the range an a set of categories for that new typ of conenction (if using web filtering). That will let you do MAC address authentication and bypass the authenticated proxy. This is what we've had to do - and it *****.
c) Wait for Apple to fix the issue. Like I said earlier, they'll either need to repurpose the "HTTP Proxy" option as "HTTP(S) Proxy" and allow HTTPS challenge responses to proxies via the one KeyChain item... or supply a second "HTTPS Proxy" option we can specify under "Manual". It's a fault in their software. To be honest... I preferred it when HTTPS traffic was just blocked (as in iOS4).

Proxy Authentication dialog box displayed very often

Hello,
since iOS 8.0 / 8.02 our iPads displays very often (somtimes more than 3 times a minute) for proxy authentication credentials.
We tried it with
- a payload in our Apple configurator (wifi) profile with automatic proxy config http://proxy/proxy.pac
- a manual configuration without profile and manual stored credentials and manual proxy configuration in the wifi connection
I think the manual configuration is a little bit better, but still inacceptable.
With iOS 7 and the same iPad and same apple configurator profile we don't have this problems.
Every help is appreciated.
Thanks
Michael

Hello,
since iOS 8.0 / 8.02 our iPads displays very often (somtimes more than 3 times a minute) for proxy authentication credentials.
We tried it with
- a payload in our Apple configurator (wifi) profile with automatic proxy config http://proxy/proxy.pac
- a manual configuration without profile and manual stored credentials and manual proxy configuration in the wifi connection
I think the manual configuration is a little bit better, but still inacceptable.
With iOS 7 and the same iPad and same apple configurator profile we don't have this problems.
Every help is appreciated.
Thanks
Michael

Mac Adobe Flash Player not supporting Web Proxy Authentication

Anyone else got an enterprise network where you use web proxies with web authentication and no traffic allowed out except through the proxies?
You may need to be in the UK for this, but try accessing BBC iPlayer content - http://www.bbc.co.uk/iplayer and you should discover that the content won't play. the error says "This content doesn't seem to be working. Try again later.". The content will never work as the Mac version of Flash (currently 10.1.53.64) is not able to respond to web proxy authentication requests. The BBC use various streaming server which are randomly selected when a user starts a stream and they have no DNS. Just IP addresses. They don't publish a list for security reasons. So it is almost impossible to exempt all their servers from authentication.
I've logged a bug with Adobe. If you have this issue too, please add a comment and vote so that they can begin to grasp the impact of this problem:
https://bugs.adobe.com/jira/browse/FP-5161

I have the same issues in Australia trying to access flash content from the ABC website. The strange thing is the content will play if your leave the browser open for 5min.
After several packet data captures we identified that it has to do with the amount of time it takes the Mac timeout from the proxy before it plays the video content.
No solution yet.

My app store is not working after installing mavericks. When I open app store it repeatedly asking me to login with apple ID and to provide User name and Password for proxy authentication in a loop.I am a newbie to mac,Please help me.

My app store is not working after installing mavericks. When I open app store it repeatedly asking me to login with apple ID and to provide User name and Password for proxy authentication in a loop.I am a newbie to mac,Please help me.

Hmmmm... would appear that you need to be actually logged in to enable the additional menu features.
Have you tried deletting the plists for MAS?
This page might help you out...
http://www.macobserver.com/tmo/answers/how_to_identify_and_fix_problems_with_the _mac_app_store
Failing that, I will have to throw this back to the forum to see if anyone else can advise further.
Let me know how you get on?
Thanks.

How to set proxy authentication using java properties at run time

Hi All,
How to set proxy authentication using java properties on the command line, or in Netbeans (Project => Properties
=> Run => Arguments). Below is a simple URL data extract program which works in absence of firewall:
import java.io.*;
import java.net.*;
public class DnldURLWithoutUsingProxy {
   public static void main (String[] args) {
      URL u;
      InputStream is = null;
      DataInputStream dis;
      String s;
      try {
          u = new URL("http://www.yahoo.com.au/index.html");
         is = u.openStream();         // throws an IOException
         dis = new DataInputStream(new BufferedInputStream(is));
         BufferedReader br = new BufferedReader(new InputStreamReader(dis));
      String strLine;
      //Read File Line By Line
      while ((strLine = br.readLine()) != null)      {
      // Print the content on the console
          System.out.println (strLine);
      //Close the input stream
      dis.close();
      } catch (MalformedURLException mue) {
         System.out.println("Ouch - a MalformedURLException happened.");
         mue.printStackTrace();
         System.exit(1);
      } catch (IOException ioe) {
         System.out.println("Oops- an IOException happened.");
         ioe.printStackTrace();
         System.exit(1);
      } finally {
         try {
            is.close();
         } catch (IOException ioe) {
}However, it generated the following message when run behind the firewall:
cd C:\Documents and Settings\abc\DnldURL\build\classes
java -cp . DnldURLWithoutUsingProxy
Oops- an IOException happened.
java.net.ConnectException: Connection refused
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:305)
at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:171)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:158)
at java.net.Socket.connect(Socket.java:452)
at java.net.Socket.connect(Socket.java:402)
at sun.net.NetworkClient.doConnect(NetworkClient.java:139)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:402)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:618)
at sun.net.www.http.HttpClient.<init>(HttpClient.java:306)
at sun.net.www.http.HttpClient.<init>(HttpClient.java:267)
at sun.net.www.http.HttpClient.New(HttpClient.java:339)
at sun.net.www.http.HttpClient.New(HttpClient.java:320)
at sun.net.www.http.HttpClient.New(HttpClient.java:315)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:510)
at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:487)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:615) at java.net.URL.openStream(URL.java:913) at DnldURLWithoutUsingProxy.main(DnldURLWithoutUsingProxy.java:17)
I have also tried the command without much luck either:
java -cp . -Dhttp.proxyHost=wwwproxy -Dhttp.proxyPort=80 DnldURLWithoutUsingProxy
Oops- an IOException happened.
java.io.IOException: Server returned HTTP response code: 407 for URL: http://www.yahoo.com.au/index.html
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1245) at java.net.URL.openStream(URL.java:1009) at DnldURLWithoutUsingProxy.main(DnldURLWithoutUsingProxy.java:17)
All outgoing traffic needs to use the proxy wwwproxy (alias to http://proxypac/proxy.pac) on port 80, where it will prompt for valid authentication before allowing to get through.
There is no problem pinging www.yahoo.com from this system.
I am running jdk1.6.0_03, Netbeans 6.0 on Windows XP platform.
I have tried Greg Sporar's Blog on setting the JVM option in Sun Java System Application Server (GlassFish) and
Java Control Panel - Use browser settings without success.
Thanks,
George

Hi All,
How to set proxy authentication using java properties on the command line, or in Netbeans (Project => Properties
=> Run => Arguments). Below is a simple URL data extract program which works in absence of firewall:
import java.io.*;
import java.net.*;
public class DnldURLWithoutUsingProxy {
   public static void main (String[] args) {
      URL u;
      InputStream is = null;
      DataInputStream dis;
      String s;
      try {
          u = new URL("http://www.yahoo.com.au/index.html");
         is = u.openStream();         // throws an IOException
         dis = new DataInputStream(new BufferedInputStream(is));
         BufferedReader br = new BufferedReader(new InputStreamReader(dis));
      String strLine;
      //Read File Line By Line
      while ((strLine = br.readLine()) != null)      {
      // Print the content on the console
          System.out.println (strLine);
      //Close the input stream
      dis.close();
      } catch (MalformedURLException mue) {
         System.out.println("Ouch - a MalformedURLException happened.");
         mue.printStackTrace();
         System.exit(1);
      } catch (IOException ioe) {
         System.out.println("Oops- an IOException happened.");
         ioe.printStackTrace();
         System.exit(1);
      } finally {
         try {
            is.close();
         } catch (IOException ioe) {
}However, it generated the following message when run behind the firewall:
cd C:\Documents and Settings\abc\DnldURL\build\classes
java -cp . DnldURLWithoutUsingProxy
Oops- an IOException happened.
java.net.ConnectException: Connection refused
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:305)
at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:171)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:158)
at java.net.Socket.connect(Socket.java:452)
at java.net.Socket.connect(Socket.java:402)
at sun.net.NetworkClient.doConnect(NetworkClient.java:139)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:402)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:618)
at sun.net.www.http.HttpClient.<init>(HttpClient.java:306)
at sun.net.www.http.HttpClient.<init>(HttpClient.java:267)
at sun.net.www.http.HttpClient.New(HttpClient.java:339)
at sun.net.www.http.HttpClient.New(HttpClient.java:320)
at sun.net.www.http.HttpClient.New(HttpClient.java:315)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:510)
at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:487)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:615) at java.net.URL.openStream(URL.java:913) at DnldURLWithoutUsingProxy.main(DnldURLWithoutUsingProxy.java:17)
I have also tried the command without much luck either:
java -cp . -Dhttp.proxyHost=wwwproxy -Dhttp.proxyPort=80 DnldURLWithoutUsingProxy
Oops- an IOException happened.
java.io.IOException: Server returned HTTP response code: 407 for URL: http://www.yahoo.com.au/index.html
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1245) at java.net.URL.openStream(URL.java:1009) at DnldURLWithoutUsingProxy.main(DnldURLWithoutUsingProxy.java:17)
All outgoing traffic needs to use the proxy wwwproxy (alias to http://proxypac/proxy.pac) on port 80, where it will prompt for valid authentication before allowing to get through.
There is no problem pinging www.yahoo.com from this system.
I am running jdk1.6.0_03, Netbeans 6.0 on Windows XP platform.
I have tried Greg Sporar's Blog on setting the JVM option in Sun Java System Application Server (GlassFish) and
Java Control Panel - Use browser settings without success.
Thanks,
George

Powershell Error for SharePoint Online -"The remote server returned an error: (407) Proxy Authentication Required."

I am trying to call sharepoint online from powershell. Below is the code. I get
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$loadInfo2 = [System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SharePoint.Client.Runtime")
$webUrl = "ZZZZ"
$username = "XXX"
$password = "YYYY"
$ctx = New-Object Microsoft.SharePoint.Client.ClientContext($webUrl)
$ctx.Credentials = New-Object Microsoft.SharePoint.Client.SharePointOnlineCredentials($username, $password)
$web = $ctx.Web
$lists = $web.Lists
$ctx.Load($lists)
$ctx.ExecuteQuery()
$lists| select -Property Title
Raj-Shpt

Hi,
About how to access SharePoint online site using PowerShell, the blog below would be helpful:
http://social.technet.microsoft.com/wiki/contents/articles/29518.csom-sharepoint-powershell-reference-and-example-codes.aspx
Another two demos for your reference:
http://www.hartsteve.com/2013/06/sharepoint-online-powershell/
http://www.sharepointnutsandbolts.com/2013/12/Using-CSOM-in-PowerShell-scripts-with-Office365.html
Thanks
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]

ITunes 10.6 Proxy Authentication Problem

As all we know, since we've installed iTunes 10.6, we're having issues with proxy authentication. Whenever i want to connect to iTunes Store or open iTunes it always asks me about my username and password even thoug i check Remember Me check box.
I wonder if you did gave any feedback or answer from Apple?
Thanks

same issue, even w/ the 10.6.3 update.
very disappointing.
looks like this thread is a duplicate of https://discussions.apple.com/thread/3803634?start=0&tstart=0

Administration of APEX in SQL Developer with Proxy Authentication impossibl

Hello!
We are using latest version of SQL Developer to administer APEX. We are connecting to the database with proxy authentication. The syntax is:
personal_user[apex_ws_owner]
e.g.: mdecker[apex_demo]
When trying to deploy APEX application I go to "Database Object" -> Application Express -> Application1 [100] -> right mouse click: "Deploy Application". Then I select the appropriate database identifier and next, I am presented with a screen showing import options. In second line, it says: "Parsing Schema: MDECKER".
This is wrong: it has to be Parsing Schema: APEX_DEMO. It seems that managing APEX with SQL Developer does not support Proxy Authentication.
Could you please confirm?
Is there a way to formally ask for this enhancement?
Best regards,
Martin
Update:
I found out that if I check the flag "Proxy Authentication" in the connect details and provide both passwords, the deploy application parsing schema is set to the correct APEX_DEMO account. However, we are using Proxy Authentication in order to avoid having to know the application password.
Edited by: mdecker on Jan 28, 2013 4:48 PM

There is a write-up about connecting to APEX here: <a href ="http://www.oracle.com/technology/products/database/application_express/html/sql_dev_integration.html" >SQL Dev Oracle APEX Integration</a>
<p>You do need to have updated to Oracle APEX 3.0.1.
<p>Regards <br>
Sue

How to pass Proxy user dynamically in Toplink proxy authentication?

Hi,
I'm using Toplink Proxy Authentication with my ADF JSF application and want to pass the Proxy user dynamically to the preLogin(..) method of mySessionEventListener (Currently proxy user is hard coded).
This is to make my application user as the Proxy user.
I have tried to do this in two ways:
1) In my Login screen Backing Bean, I retrieve the session as
session = sessionFactory.acquireSession(); and set the application user in it as
session.setProperty("proxyUser1", inputText1.getValue());
But,
session.getProperty("proxyUser1") returns null in the preLogin(..) method
2) I add a loginUser property to the mySessionEventListener class and create a constructor to set it.
Then I call the constructor from my Login Backing Bean as
mySessionEventListener eventMgr = new mySessionEventListener(<proxy_user>);
session.getEventManager().addListener( eventMgr );
But, the loginUser property seeems to be transient and does not retain value when retrieved in preLogin(..) method.
Please indicate if anything is wrong. Also, is there any other way to get this done?
Thanks in advance.
Vikas

Hi Vikas,
Probably your sessions.xml defines a ServerSession, and acquireSession method returns a ClientSession. ServerSession is the object that connects to the database, it may have any number of ClientSessions associated with it - all of them use connections provided by ServerSession's connection pools.
So if you'd like to alter the serverSession before login, acquireSession is too late - it triggers login of the ServerSession and returns a ClientSession.
To get the ServerSession before login:
// the first param indicates that the session shouldn't be connected
Session serverSession = sessionFactory.getSharedSession(false, false);Now you have a serverSession on which login hasn't been called yet.
You can set the property into the session, or directly into its login.
In fact you may choose to do whatever you wanted to do in preLogin right here - in this case no preLogin event would be required of course.
Finally to get a ClientSession, call the same api did:
// the first param indicates that the session shouldn't be connected
Session clientSession = sessionFactory.getSession();On the first such call the ServerSession will be connected.
Note that because all the ClientSessions will connect through the connections provided by the same ServerSession they will all use proxyUser1.
If you are interested in using different proxy users for different ClientSessions http://www.oracle.com/technology/products/ias/toplink/doc/1013/main/_html/dblgcfg008.htm#BABDABCF lists several scenarios for that.
Andrei

Oracle Proxy Authentication and WLS 8.1/CMP

Hey folks,
Is there any way to configure WLS 8.1 to automatically set the Oracle CLIENT_IDENTIFIER
variable or use Oracle Proxy Authentication on JDBC connections? I'm interested
in using Oracle auditing with my CMP entity beans, but would like to capture the
app tier user identity, instead of the data source pool user.
Thanks.

"Brent Smith" <[email protected]> wrote in message
news:3fa15807$[email protected]..
>
Hey folks,
Is there any way to configure WLS 8.1 to automatically set the OracleCLIENT_IDENTIFIER
variable or use Oracle Proxy Authentication on JDBC connections? I'minterested
in using Oracle auditing with my CMP entity beans, but would like tocapture the
app tier user identity, instead of the data source pool user.
I would ask in the weblogic.developer.interest.jdbc newsgroup.

Acrobat Standard Proxy Authentication

Hi,
When we sign our PDF's we want to use an external timestamping server
So we have configured both a Verisign and Globalsign timestamping server and made one of them as default
Most of the time we got a response from Acrobat saying
"Timestamp signature property generation error:
Transport authorization failure"
When it fails the doc is signed, but using the computers clock and we want to avoid that
But sometime it did work which confused us but I think we have identified the problem with the Proxy authentication
Our proxy requires full authetication against our Active Directory
So when it worked was just because we just before signing had been surfing on the internet and the proxy had cached the credential approvals
So when Adobe tried to get out to the timestamp server the ID was already authorized in the proxy
But without a previous "IE-surfing" it fails, the proxy has nothing in its cache
A network trace confirms this, we see a "Authentication required" request from the proxy that Acrobat never responds to
The proxy does not accept annonymous requests
IE is configured to use a configration script for its proxy settings
I cant find any relevant Acrobat settings that handles this and googling indicates that Acrobat has problems in this area
But I haven't found anything for our version/release
Now for the question, is Adobe Acrobat Standard 9.3.0 supposed to handle proxys that requires AD authentication?
To bypass the proxy is not an option
Setting a proxy exception for these servers is maybe an option
Prefered is that Acrobat handles this

To update my own question since it might help others
I received assistance through the Adobe support channels
Not what I was hoping for but it clarifies the problem
The reason I asked the question is that we don’t support Shared Review with an Authenticating Proxy server. So this customer workflow isn’t too far off the mark with having a proxy server authentication expectation in the standalone client and wanting a timestamp server time. The only workaround to this behavior is to do exactly what they have found. Launch an instance of Internet Explorer, authenticate against the proxy server and then sign the PDF file.

IOS 6 breaks corp proxy authentication

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