SQL Server Always On Not Synchronizing after installing cumulative updates

I wanted to make everyone aware that there is an Always On bug in SQL 2012 SP2 CU3 and CU4 and SQL 2014 CU5.   You can find the article and fix here:

https://support.microsoft.com/en-us/kb/3033492

If there are no other critical updates that you may need, it would be suggested to wait until the next round of cumulative updates to patch if you have Always On servers.   This is always the recommendation to not apply Cumulative Updates but to wait and install Service Packs when they are released.  For Dynamics AX 2012, SQL 2012 SP2 CU2 because of a needed SSIS fix for DMF.

Rod “Hotrod” Hansen