Knowledge base for software setup, errors, and daily tool work.

Fix DNS Probe Finished NXDOMAIN Caused by Antivirus Blocking

You try to load a website and see DNS_PROBE_FINISHED_NXDOMAIN in Chrome, or simi...

Fix 'git pull failed index.lock file exists' Error

When running git pull, you may see an error like:

Fix Windows Security App Error 0x80070424

When you open Windows Security or try to run a scan, you might see error code 0x80070424. This us...

How to Fix Windows Update Error 0x80070002 by Resetting Components

If you see error 0x80070002 when trying to run Windows Update, the system often cannot find or re...

Windows Security App Not Opening? Try These Steps

If the Windows Security app won't open, shows a blank screen, or crashes immediately, you'...

Fix Nginx Upstream Connection Refused Socket Error