Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

View list

Fix Microsoft Store Permission Denied Error: Reset Permissions

When you see a 'permission denied' error in Microsoft Store—often when trying to install or updat...

Fix Remote Desktop Connection Timeout Error 0x104

When you try to connect to a remote PC and get error 0x104, the connection times out before the l...

Fix Chrome Profile Authentication Failed Error via Registry

You try to sign into a site in Chrome, and you get an error like "Profile authentication failed" ...

Fix Windows Store Error 0x80073cf9 Sync Issue

You open the Microsoft Store, try to download or update an app, and get error code 0x80073cf9. Th...

Fix Windows Activation Command Error 0x80070002

When you try to activate Windows using the command line—for example, running slmgr /ato

Fix Outlook Connection Refused Due to Firewall Settings
If Outlook suddenly shows a "connection refused" error when trying to send or receive email, the ...