No prompt for credentials when you start Outlook 2010 as an initial application in RDP or as a published application in Citrix Zen

Microsoft Outlook 2010 does not prompt for credentials if one of the following conditions is true: 

• You start Outlook 2010 as an initial application in a remote desktop (RDP) session. 
• You start Outlook 2010 as a published application in Citrix Zen.

To resolve this issue, apply the following update:

Registry key information

Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base: After you install the hotfix package, follow these steps to enable the hotfix:

1. Click Start, click Run, type regedit in the Open box, and then click OK.
2. Locate and then select the following registry subkey:
   HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Common\General
3. On the Edit menu, point to New, and then click DWORD (32-bit) value.
4. Type DoNotQueryUserNotificationState, and then press ENTER.
5. Right-click DoNotQueryUserNotificationState, and then click Modify.
6. In the Value data box, type 1, and then click OK.
7. Exit Registry Editor.

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.