How to Fix Windows Update Error 0x800f081f (Missing Files)
You see error 0x800f081f when running Windows Update, often with a message like 'The source f...
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All notesHow to Fix Git Detached HEAD State and Undo Changes
You run git status and see something like "HEAD detached at abc123". This ha...
Fixing NGINX 502 Bad Gateway in Docker Containers
When running NGINX as a reverse proxy in Docker, a 502 Bad Gateway error usually means NGINX cann...
Fix Edge Sync Stuck on Sign-In Loop
You open Microsoft Edge, try to sign in to sync your data, and it keeps looping back to the sign-...
Fix DNS Probe Finished NXDOMAIN on Custom DNS Server
If you see “DNS PROBE FINISHED NXDOMAIN” in Chrome or another browser while using a custom DNS se...
Fix Windows Security App Blocked by Antivirus
You open Windows Security (formerly Windows Defender) only to see an error or blank screen becaus...
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