Hello all, has anyone else encountered this?
once upgrade to 10.2.2 is complete, I am greeted with:
Administrators, if you have any subscribed catalogs, verify that the catalog synchronization is working properly. If the synchronization fails, verify and save your subscription settings again. All other users can ignore or dismiss this message.

here we see catalog sync is indeed broken:

Error: Subscription details for external catalog could not be validated. Reason [Err Code: CERTIFICATE_ERROR]: Remote catalog certificate error: Certificate for <x.x.x.x> doesn't match any of the subject alternative names

It's certainty certificate related, however, all is working across my sites prior to upgrade.