WSUS Server Node reset error

Question

All of a sudden when launching the WSUS application on Windows server 2012 RS2 the home screen just gets stuck on loading and then goes to a 'reset server node' error. This typically started happening before this problem when trying to run the Server cleanup wizard but now it just doesnt work at all and goes right into the error message. I tried running other links from the options tab but would eventually get the errors below and then eventually the 'Reset Server Node' error. Any help is appreciated.

Answer 1

@Madman2112
Thank you for posting in Microsoft Q&A forum.
Please try below steps:

1. Open IIS
2. Click on Application Pools
3. Click on WsusPool
4. Click Advanced Settings
5. Scroll down and increase the Private Memory Limit and decrease the Regular Time Interval.
   For more details, refer to the link, you may also try other solutions as the link mentioned:
   (Third-party link, just for your reference)
   https://www.itsmarttricks.com/fix-wsus-connection-error-reset-server-node-on-windows-server-2012/

If it doesn't work. you may try to set the limit memory to 0 like below thread suggested:
https://social.technet.microsoft.com/Forums/lync/en-US/7226dc0d-e3c5-40c2-817d-048bb0a74980/error-connection-error-click-reset-server-node-to-try-to-connect-to-the-server-again?forum=winserverwsus

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Answer 2

Yep, the application pool memory is probably too low. Also look at your vCPUs (if a VM)

https://www.ajtek.ca/wsus/wsus-system-requirements-what-should-i-plan-for/

Also, are you performing the proper WSUS maintenance including but not limited to running the Server Cleanup Wizard (SCW), declining superseded updates, running the SQL Indexing script, etc.?

https://www.ajtek.ca/wsus/how-to-setup-manage-and-maintain-wsus-part-8-wsus-server-maintenance/