You can find the knowledge base article and hotfix here:
One thing to note, The KB article states:
Restart requirementsYou do not have to restart the computer after you apply this hotfix package.
Note You are required to close the ConfigMgr admin console before you install the hotfix package.
Note the ConfigMgr admin console must be closed. I didn't see another user logged onto the server when I ran the update and as they had the console open, I got prompted to restart.