How to Fix Windows Defender Not Opening
If Windows Defender won’t open—whether it crashes, shows a blank window, or does nothing when you...
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2. Isolate
3. Apply
4. Verify
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View listFixing Windows Security 502 Bad Gateway Errors
If you see a 502 Bad Gateway error in Windows Security (or the Windows Defender portal), it usual...
Fix Windows Activation Cannot Connect to Server Error
When you try to activate Windows and see the error "We can't activate Windows because we can't co...
Fix Windows Defender Error 0x80070643 on macOS
If you see error 0x80070643 when installing or updating Windows Defender on a Mac (via Parallels,...
Fix Windows Activation 502 Bad Gateway Due to Proxy Settings
If you see a "502 Bad Gateway" error when trying to activate Windows, the problem is often a misc...
Checklist: Windows Update Service Not Running in Services.msc
When you open Services.msc and see that the Windows Update service (wuauserv) is not running, or ...
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