SOLVED: WSUSPool in IIS Stops Repeatedly

If you track the problem down to an IIS issue in which the WSUSPOOL keep stopping, you likely need to expand the memory limitation and the recycle time:

1. Launch IIS
2. Click on APPLICATION POOLS
3. Click on WSUSPOOL
4. Click ADVANCED SETTINGS (action pane on right side)
5. Scroll down and increase the PRIVATE MEMORY LIMIT and decrease the REGULAR TIME INTERVAL.

The screen shot below shows the setting we are using at one of our clients:

See our short explanation of how to fix SOLVED: WSUS Reset Server Node .