Had a small issue with my SharePoint 2013 MySite today, I could not update a User Profile in Central Admin – this is what I got from the ULS Log:
The Execute method of job definition Microsoft.Office.Server.UserProfiles.LMTRepopulationJob (ID 104963a2-b53c-4476-bc23-fa7d6453e42f) threw an exception. More information is included below. Unexpected exception in FeedCacheService.IsRepopulationNeeded: Cache cluster is down, restart the cache cluster and Retry.
At least the error message pointed me to the right direction, the Cache Cluster is new in SharePoint 2013 and I associated it with the app fabric distributed cache. As I first read it it sounded like “The King is dead - long live the King!” - but maybe I watch to many movies…
Restart the app fabric service and wait a couple of second with a line of powershell: