Problem

If you are getting errors in your Event Viewer like

"The Execute method of job definition Microsoft.Office.Server.Administration.ApplicationServerAdministrationServiceJob (ID 02b5e3f2-21e3-4552-bf1d-6e152749458a) threw an exception. More information is included below." and

"Attempted to read or write protected memory. This is often an indication that other memory is corrupt." on your SharePoint Server you need to apply a hotfix from Microsoft.

Solution

This happens if a process with more than one thread tries to access the Internet Information Services 6.0 (IIS 6.0) using the Active Directory Service Interfaces (ADSI) provider at the same time.

You can find the solution in the article KB946517.