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Fix Windows Security Real-Time Protection Not Working

If you see a yellow warning in Windows Security that says "Real-time protection is off" or it tur...

Setup Windows Defender to Trust an SSL Certificate

If you're running a local development server or an internal application with a self-signed or pri...

How to Fix Microsoft Teams DNS Error

You open Microsoft Teams and get a message like "Can't connect" or "DNS error." This usually mean...

Fix Windows Defender Sync Error 504 Gateway Timeout

If you see a "504 Gateway Timeout" error when Windows Defender tries to sync, it usually means th...

Fix PostgreSQL Connection Refused Due to Firewall

When you see psql: error: connection to server at "host" (IP), port 5432 failed: Connection...

Fix Windows Update Error 0x80070002
When Windows Update fails with error 0x80070002, it usually means the update installer can't find...


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