CU Update to Sql Server 2014 hangs for 7 hours How to improve time for patching installs?  Applying patches on test Hyper-V VM's prior to production patching.  It is a two node Always-On AG.

From Detail.txt when I let it run:

(01) 2017-04-26 15:55:36 Slp: Running discovery on remote machine: SQLHADEV1

(01) 2017-04-26 21:48:32 Slp: Discovery on SQLHADEV1 is complete


Things I've checked/done:


Resources are lightly used shown in task manager
Validated the Cluster
Overkill on security, the account running the SQL Services on both nodes is sysadmin on both nodes
Attempted to get cluster log but it error-ed

PS SQLSERVER:\&gt; Get-ClusterLog -Destination C:\tempsql 
Get-ClusterLog : The network name cannot be found.

Tested install media on non-AG local box and it installed as expected
Applied windows updates on both servers, failed over, failed back, and restarted servers.  Successful automatic failover





HKLM\System\CurrentControlSet\Services\LanmanServer\Parameters\AutoShareServer to 1. restart the server service.  Validate my navigating to \servername\C$.  If you can't navigate there, the Admin$ share is not available.
Ran the patch install on a non-AG Hyper-V VM successfully
No errors or messages in the Windows Event Logs or SQL Server event logs on either node that are telling.
Changing the reg key HKLM\System\CurrentControlSet\Services\LanmanServer\Parameters\AutoShareServer to 1. restart the server service. Validate by navigating to \servername\C$. If you can't navigate there, the Admin$ share is not available.  In my case something is causing the key to get reverted very quickly.  I'll get with the network admin to suspend this action so the Admin$ share stays available.