You may be unable to manage IIS by using Server Manager if two threads access IIS at the same time

As the title says, you maybe unable to manage IIS, consider the following scenario, when you have a process that has more than one thread running, additionally, the process uses the Internet Information Services (IIS) and Active Directory Service Interfaces (ADSI) provider to access IIS. and the two threads access IIS at the same time.

When this problem occurs, you must restart IIS, or the process that uses the IIS ADSI provider. This problem is likely to occur for the SharePoint Timer service (OWSTimer.exe) in Microsoft Office SharePoint Server 2007. When this problem occurs you may experience the following symptoms:

The IIS options tree is empty, and when you try to connect to the local server you receive the error shows in the image and this so beautiful stack:

Application Server Administration job failed for service instance Microsoft.Office.Server.Search.Administration.SearchAdminSharedWebServiceInstance (42a6deab-10d6-4579-bdc3-10c1beefb6ca).

Reason: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.

Techinal Support Details:

System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.

In this url you can find more info about it and a hot fix to solve the problem.

This issue affects to IIS 6.0 and 7.0 as described in the KB article in the link.

Hope it helps…

Greetings…

Paúl…