Checklists for software errors, setup, and tool workflows.

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Fix Windows Update 404 Not Found Using Command Prompt

If you see a 404 error when checking for Windows updates, it usually means the update files canno...

Fix Windows Activation Error 0x8007007b on Ubuntu

If you see Windows activation error 0x8007007b while using Ubuntu (for example, in a dual-boot se...

Fix 'Windows Activation Command Not Found' by Checking System Files

When you run slmgr.vbs or cscript slmgr.vbs to activate Windows and get...

Fix Microsoft Store Authentication Failed Due to App Permissions

You try to sign in to the Microsoft Store and see "Authentication failed" or "Something went wron...

Fix Windows Defender Module Not Found Error 0x80070643

You see "Windows Defender module not found" with error code 0x80070643

Fix Microsoft Store Blank White Screen After Update
After a Windows update, you might open Microsoft Store and see only a blank white screen. This is...