
Fix Windows Update Error 0x80070020: Port Already Allocated
When you see error 0x80070020 during a Windows Update, it usually means a program is already usin...
Software troubleshooting desk

When you see error 0x80070020 during a Windows Update, it usually means a program is already usin...

After a Windows update, you might open Outlook and see a “permission denied” error when trying to...

You open Windows Security and see a red banner: “Virus & threat protection turned off.” This can ...

If you're seeing certificate warnings, SSL connection errors, or websites that won't load properl...

You're browsing in Chrome on Windows 10 and suddenly get a '404 Not Found' page. This usually mea...

You're updating Windows and it gets stuck at 30% during the migration phase. This often happens w...