Just an FYI on a new KB we published today.  This will eventually show up here but I thought I'd post a heads up since it may take another day or two before the link is live.  As with all Knowledge Base articles we publish, when it does go live you should always refer to the original article...

I recently ran across an issue where notification subscriptions were getting disabled every 30 minutes. The strange thing was that only about half of the subscriptions were being disabled and they were the same subscriptions every time. I tried re-enabling them with both Powershell as well as the GUI...