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How to Reset Windows Defender Real-Time Protection

Windows Defender real-time protection can sometimes get stuck, fail to turn on, or stop respondin...

Fix Nginx Redirect Loop Caused by Rewrite Rules

Redirect loops in Nginx often appear as endless redirects between two URLs or as a browser error ...

Fix Windows 11 Installation Assistant Frozen During Update

You launch Windows 11 Installation Assistant to upgrade from Windows 10, but the progress bar sto...

Fixing Nginx Upstream Connection Refused on Port 443

You see "upstream connection refused" in your Nginx error log when proxying requests to p...

Fix Cloudflare 521 Error: DNS Configuration Problem

If you see a Cloudflare 521 error page, it means Cloudflare's servers are unable to connect t...

Fix Git SSL Certificate Problem on Windows: Unable to Get Local Issuer

If you see fatal: unable to access 'https://...': SSL certificate problem: unable t...


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