Go to Start -> Run -> RegEdit
Go to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\User Agent\Post Platform
You’ll have something similar to this:
Recently, Windows Update included a set of addins, including Office Live connector.
This then causes error messages when customising SharePoint.
This can be resolved (only if you are getting error messages) by modifying the registry. (WITH CARE!!)
4.Delete a couple from this list (duplicate major versions, or ones you aren’t using). Mine then looked like this:
5. Then restart Internet Explorer (including all instances).