For reasons unknown, one of my web adaptors "lost" its connection to ArcGIS Server - even though the Server Manager still showed an entry for it.
My only resolution was to delete the registration from ArcGIS Server then and re-register the adaptor.
I was curious if anyone else has seen this happen and, if so, any ideas as to what caused it?
We've been running the current configuration since March with no other problems.
Thanks!