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How to Reinstall Windows Security App (Microsoft Defender)

If the Windows Security app (Microsoft Defender) is missing, crashing, or not opening, reinstalli...

Fix Windows Defender Real-Time Protection Stuck on Turning Off

You open Windows Security, go to Virus & threat protection, and see Real-time protection stuc...

How to Fix Git SSL Certificate Problem: Unable to Get Local Issuer

When you run a Git command and see error: SSL certificate problem: unable to get local issu...

Fix Cloudflare 521 Error Due to Server Overload
You see a Cloudflare 521 error page. The message says the web server is down. Often, this means y...

Fix Nginx Configuration Test Failure from Rewrite Rules
You run nginx -t and get an error. The log points to a rewrite rule. This is common ...

Fix Docker 'No Space Left on Device' from Log Files
You try to start a container or pull an image and get no space left on device. Often...


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