After installing
SharePoint 2010 Service Pack1, when attempting a profile synchronization get
the following error:
Log Name:
Application
Source:
FIMSynchronizationService
Date: 6/29/2011
3:55:30 PM
Event ID: 6801
Task Category:
Server
Level: Error
Keywords: Classic
User: N/A
Computer:
[computername]
Description:
The extensible
extension returned an unsupported error.
Resolution:
Uninstall .Net framework 4.0 extended properties and client profile that should
solve the issue.