Please check to see your application pool memory settings by using the WAM Shell (Windows Menu > Programs > AJ Tek > WSUS Automated Maintenance > WAM Shell) and running:
If it is less than 4GB, set it to 4GB
.\Clean-WSUS.ps1 -SetApplicationPoolMemory 4096
If it is more than 4GB already, set it to Unlimited
.\Clean-WSUS.ps1 -SetApplicationPoolMemory 0
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