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Windows Security for Ubuntu Installation Checklist

Before You Install Ubuntu

If you're dual-booting Windows and Ubuntu, or replacing Windows...

Windows Search Not Showing Results After Update: Fixes

After a Windows update, you might type in the Start menu or taskbar search and see no results—or ...

Fix Windows Defender Service Not Running

If you see "Windows Defender service not running" or a red warning in Security Center, the underl...

Fix OneDrive Sync DNS Errors After Network Change

After changing networks—switching from home to office Wi-Fi, using a VPN, or reconfiguring your r...

Fix Remote Desktop Certificate Error 0x80090322

When connecting to a remote desktop, you might see error 0x80090322. This usually appears as a me...

How to Fix Cloudflare Error 521: Web Server Is Down

If you're seeing Cloudflare error 521, it means Cloudflare can't establish a TCP connection to yo...