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

Fix OneDrive Sync Error 0x8004de40: Service Unavailable

When OneDrive shows error 0x8004de40 with the message “Sync service unavailable,” it usually mean...

Fix Task Scheduler Auto Start Not Working After Update

After a Windows update, some users find that their scheduled tasks no longer run automatically at...

Fix Windows Security Not Working in Windows 11

If Windows Security won't open, stays blank, or crashes on Windows 11, the problem is often a cor...

Outlook PST File Locked: How to Unlock and Access It

You try to open your Outlook data file (PST) and get an error that it's locked or cannot be acces...

Windows Update High CPU Usage Troubleshooting Checklist