If you do not have an A/V, your not going to get a key. The A/V provides the key for the M$ update. Without an A/V you could get the kb and install and you should not have any bsod's
Without an AV there is no regkey (at least on 7), so no kb offered on WU. But i exported the key from 10 and imported it in 7: Code: Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\QualityCompat] "cadca5fe-87d3-4b96-b7fb-a231484277cc"=dword:00000000 Now it gets KB4056894 offered on WU
yes... you have to manually get the kb and update. Please let us know if you are getting any performance hits