Checklists for software errors, setup, and tool workflows.

Fix Cloudflare DNS Not Working with VPN Connection

If you use Cloudflare DNS (1.1.1.1) and a VPN together, you may hit a snag where DNS stops resolv...

Fix Windows Defender Error 0x80070643 on macOS

If you see error 0x80070643 when installing or updating Windows Defender on a Mac (via Parallels,...

Fix VSCode Extension Host Terminated Error Code 0

What does this error mean?

When you see 'Extension host terminated unexpectedly with erro...

Fix 504 Gateway Timeout in Windows Security After Update

If you see a 504 Gateway Timeout error when opening Windows Security after a recent update, it us...

Fix Windows Security DNS Error Caused by Antivirus Conflict

You might see a Windows Security alert about a DNS error after installing or updating a third-par...

How to Repair Windows Update Components Not Working

If Windows Update hangs, returns error codes like 0x80070002 or 0x800f0900, or simply refuses to ...