You configure Microsoft Outlook 2010 to publish and retrieve Internet free/busy information that is stored on a server.
The server uses the HTTPS protocol and requires a password for authentication.
You publish Internet free/busy information to the server by using Microsoft Outlook 2010 on a computer that is running Windows 7.
In this scenario, you are not prompted for authentication. Additionally, the Internet free\busy information is not published or retrieved successfully.
To resolve this issue, apply the following update:
2596485 Description of the Outlook 2010 hotfix package (Outlook-x-none.msp): October 25, 2011
Note This hotfix is not relevant if the server that stores the Internet free/busy information uses a protocol other than HTTPS. More specifically, this hotfix is not relevant if the server uses the HTTP protocol or the FTP protocol.
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:
322756 How to back up and restore the registry in Windows
After you install the hotfix package, to have us enable the hotfix for you, go to the "Fix it for me" section. If you prefer to enable the hotfix yourself, go to the "Let me fix it myself" section.
Fix it for me
To enable the hotfix automatically, click the Fix it button or link. Then click Run in the File Download dialog box, and follow the steps in the Fix it wizard.
This wizard may be in English only. However, the automatic fix also works for other language versions of Windows.
If you are not on the computer that has the problem, save the Fix it solution to a flash drive or a CD and then run it on the computer that has the problem.