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application pool

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WsusPool keeps crashing: stops again and again

WSUS Application Pool IIS Advanced Settings

WSUSPool keeps stopping? Sometimes you find your WSUS server keeps crashing over and over again. The WSUS application pool periodically stops, WSUS is unavailable and/or the WSUS management console hangs. When you start to investigate as to why Windows Server Update Services crashes, you’ll notice the following error message being logged in the HTTPErr log files:

Set IIS Application Pool recycle defaults to Specific Times, not Regular Time Interval

Application Pool Specific Time Interval recycle settings

By default, an IIS application pool (or “AppPool”) recycles on a regular time interval of 1740 minutes, or 29 hours. One reason for this time interval is that application pools don’t recycle at the same moment every day (every day at 07.00 for example). However, sometimes you want to change this regular time interval to a specific time schedule. And when you try to configure this in IIS Manager, it gives you an error. Luckily, AppCmd and PowerShell come to the rescue!

Conditionally start Application Pools on remote IIS web servers

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In my routine, I occasionally have to start multiple website application pools when they are in a stopped state. On more than one web server. Being a lazy system administrator, I find it too much work to log on every server. Therefore I start those application pools in a loop. A condition for me to start application pools is that the application pool AutoStart property is set to true. This is because I set autostart to false when I disable hacked websites, and those application pools may not be started until all problems are resolved of course. To start application pools, I use the AppCmd command.

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