SharePoint 2013: Event ID 6398, An update conflict has occured, and you must re-try this action

You see the following error in the Application Log:




Problem:  The Configuration Cache needs to be rebuilt

• Stop the SharePoint Timer Service
• Browse to C:\ProgramData\Microsoft\SharePoint\Config\<GUID>
•  'ProgramData' is a hidden folder
• Where <GUID> is the folder ID with the most recent timestamp that also contains .xml files and the cache.ini file.
•  Make a copy/backup of the cache.ini file
• Delete all of the .xml files in the <GUID> folder
• Edit the cache.ini file, replacing the existing number with 1
• Save the cache.ini file
• Start the SharePoint Timer Service
• Verify that new .xml files are created in the <GUID> folder.

NOTE:  You may have to restart IIS and the User Profile Synchronization Service after performing this procedure.