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

Fix Windows Security File Locked Error 0x80070020

You try to move, delete, or rename a file, and Windows shows error 0x80070020: "The file is locke...

Fix Windows Defender Update Error 0x80070490 on Windows 11

If you see error 0x80070490 when trying to update Windows Defender on Windows 11, it usually mean...

Fix OneDrive Connection Refused Error 0x8004de40

You see OneDrive error 0x8004de40 with the message "Connection refused." This often happens when ...

OneDrive Sync Issues Checklist and Solutions

OneDrive sync issues can be frustrating. Files might show a sync icon that never resolves, or you...

Fix Outlook Email Sync Failed on Ubuntu

Outlook email sync fails on Ubuntu: what to check

If Outlook (via web browser, Evolution,...

Fix BitLocker Update Error Permission Denied

You try to update Windows, and BitLocker throws a 'permission denied' error. This often happens a...