Knowledge base for software setup, errors, and daily tool work.

How to Enable Windows Defender After It Failed to Start

If Windows Defender won't start, you may see an error like "This app has been turned off" or "Win...

Fix Windows Security Connection Refused Certificate Error

When you see 'connection refused' combined with a certificate error in Windows Security, it usual...

How to Fix Outlook Offline Installer Not Working

If the Outlook offline installer fails to run or gets stuck, it's often due to a corrupted downlo...

Fix VSCode Extension Host Terminated Error Code 0

What does this error mean?

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

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...

How to Fix Outlook Rate Limit Error

If you see an error like "You've hit a temporary limit" or "Try again later" when sending email i...