SOLVED ERROR: Sync failed: WSUS server not configured

[InNeedOfHelp]

I upgraded SCCM to 1906. Since this, my sync is intermittent. I have been able to sync once but that was several days ago and I had to reboot the SCCM server to get it to work. it successfully synced one time but then started failing the next time it attempted to sync.

I receive the following in the wsynmgr.log
Sync failed: WSUS server not configured. Please refer to WCM.log for configuration error details.. Source: CWSyncMgr:oSync
STATMSG: ID=6703 SEV=E LEV=M SOURCE="SMS Server" COMP="SMS_WSUS_SYNC_MANAGER" SYS=xxxxxxxx SITE=xxx PID=15148 TID=8640 GMTDATE=Mon Oct 07 16:05:35.512 2019 ISTR0="CWSyncMgr:oSync" ISTR1="WSUS server not configured. Please refer to WCM.log for configuration error details." ISTR2="" ISTR3="" ISTR4="" ISTR5="" ISTR6="" ISTR7="" ISTR8="" ISTR9="" NUMATTRS=0
Sync failed. Will retry in 60 minutes

This is what the WCM.log says
Attempting connection to local WSUS server
System.Net.WebException: The underlying connection was closed: An unexpected error occurred on a receive. ---> System.IO.IOException: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host. ---> System.Net.Sockets.SocketException: An existing connection was forcibly closed by the remote host~~ at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size)~~ --- End of inner exception stack trace ---~~ at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size)~~ at System.Net.PooledStream.Read(Byte[] buffer, Int32 offset, Int32 size)~~ at System.Net.Connection.SyncRead(HttpWebRequest request, Boolean userRetrievedStream, Boolean probeRead)~~ --- End of inner exception stack trace ---~~ at Microsoft.UpdateServices.Administration.AdminProxy.CreateUpdateServer(Object[] args)~~ at Microsoft.SystemsManagementServer.WSUS.WSUSServer.ConnectToWSUSServer(String ServerName, Boolean UseSSL, Int32 PortNumber)
Remote configuration failed on WSUS Server.

This is what the WSUSCtrl.log says
Attempting connection to local WSUS server
System.Net.WebException: The underlying connection was closed: An unexpected error occurred on a receive. ---> System.IO.IOException: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host. ---> System.Net.Sockets.SocketException: An existing connection was forcibly closed by the remote host~~ at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size)~~ --- End of inner exception stack trace ---~~ at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size)~~ at System.Net.PooledStream.Read(Byte[] buffer, Int32 offset, Int32 size)~~ at System.Net.Connection.SyncRead(HttpWebRequest request, Boolean userRetrievedStream, Boolean probeRead)~~ --- End of inner exception stack trace ---~~ at Microsoft.UpdateServices.Administration.AdminProxy.CreateUpdateServer(Object[] args)~~ at Microsoft.SystemsManagementServer.WSUS.WSUSServer.ConnectToWSUSServer(String ServerName, Boolean UseSSL, Int32 PortNumber)
Failures reported during periodic health check by the WSUS Server SCCM.smh1.smhca.org. Will retry check in 1 minutes

Any help would be greatly appreciated.

 

[Youssef Saad]

Do you have WSUS on the SCCM server or a remote machine?
Can you share with us the complete WCM.log file for more details?

 

[InNeedOfHelp]

In further troubleshooting this issue, I found an article that pointed to the WsusPool IIS application pool not running. I looked at this and it was not running. I started it and ran another sync. It still failed so I rebooted my server again. After the reboot, the sync started to work and it has worked for several syncs.

 

[Youssef Saad]

Good, it's solved now?