All my collectors are going down every 24 hours.

This definitely appears to be related to the daily credential sync/restart thing that happens.  About half of our collectors work fine.  The other half have had at least one Collector Down alert over the last few weeks, when the service didn't start back up in time.

Here's the Collector Events from one that fails almost every day.  Note that it takes 13-14 minutes from the Restart to the Up entries.

Here's one that works about half the time.

So far no one has been able to find anything that might cause the delays.  They're all going to get rebooted on Monday for Patching so maybe that will resolve something...