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UFW Port Closed Despite Allow Rule: Fixes

You've added a UFW allow rule for a port, but a port scan or service test shows the port is still...

Fix npm Command Not Found Error Code 1

When you run an npm command and get 'npm' is not recognized or command not fou...

Fix Windows Defender Service Not Starting (Connection Refused)
When you see 'Windows Defender service not starting – connection refused', it usually means the s...

Fix Windows Security Invalid Configuration Error Without Reinstalling
You open Windows Security and see the message: "Invalid configuration" or "Something went wrong. ...

Fix Windows Security Network Error 0x800704cf
When you open Windows Security and see error 0x800704cf, it usually means the app can't reach its...

How to Repair Windows Update Using System File Checker
If Windows Update fails with errors like 0x80070002 or 0x800736B3, corrupted system files are oft...


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