Installation Offer through Windows Update

The Malicious Software Removal Tool (MSRT) can be prevented from being offered as an update through Windows update.

disable_MSRT_update.reg

Windows Registry Editor Version 5.00
 
[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\MRT]
"DontOfferThroughWUAU"=dword:00000001

enable_MSRT_update.reg

Windows Registry Editor Version 5.00
 
[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\MRT]
"DontOfferThroughWUAU"=-