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

How to Fix Windows Defender Service Unavailable in Windows 10

If you see 'Windows Defender service unavailable' in Windows 10, the antivirus may be disabled or...

Fix OneDrive Sync Error 0x80070020: File Locked

OneDrive sync error 0x80070020 typically appears when a file is locked by another application (e....

How to Fix Microsoft Store File Locked Error

If you see a 'file locked' error when trying to install or update an app from the Microsoft Store...

Fix 'Permission Denied' When Opening System32 in Command Prompt

Fix Windows Activation Error 0xc004f074 on Server 2019

You see error 0xc004f074 when activating Windows Server 2019. This usually means the server can't...

Fixing SSL Certificate Errors in Windows 10 Edge Browser

When you see an SSL certificate error in Microsoft Edge on Windows 10, the browser blocks the pag...