Windows Defender Troubleshooting Checklist
Windows Defender (now Microsoft Defender Antivirus) usually runs quietly in the background, but s...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix a Corrupted Windows Update Configuration
If Windows Update fails with errors like 0x80070002, 0x80073712, or simply hangs, the update conf...
Fix Putty Connection Refused Due to Windows Firewall
You're trying to SSH into a remote server using Putty, but you get a 'Connection refused' error. ...
How to Disable Git SSL Certificate Verification Temporarily
If you see an error like fatal: unable to access '...': SSL certificate problem: unable to ...
Fix Windows Update Version Mismatch Error
When you see a version mismatch error in Windows Update, it usually means the update files on you...
Fix Windows Activation Authentication Failed After Hardware Change
After upgrading your PC's motherboard, CPU, or other major hardware, Windows may display an activ...
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