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Fix Windows Defender Real-Time Protection Stuck Off in Windows 11

You open Windows Security, see real-time protection is off, click the toggle, and it turns back o...

Cloudflare 521 Error: Troubleshooting and Fixes

When you see a 521 Web Server Is Down error, it means Cloudflare cannot establis...

Fix Windows Update Service Not Starting Automatically

If Windows Update stops working, the most common reason is that the Windows Update service isn...

Fix Git 'fatal: refusing to merge unrelated histories' on GitHub

You try to merge two branches in Git, and get fatal: refusing to merge unrelated histories<...

Cloudflare Origin Certificate Setup for Apache
If you use Cloudflare's proxy (orange cloud), you can set up an origin certificate to encrypt...

Fix 'Git Remote Origin Already Exists' When Updating Remote URL
You run a command like git remote add origin https://newurl.com/repo.git and get


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