Checklists for software errors, setup, and tool workflows.

Fix Windows Activation Command Not Found or Permission Denied

When trying to activate Windows using the command line (slmgr.vbs or slui), you might see errors ...

Fix Microsoft Teams Access Denied Due to Admin Restrictions

You try to sign in to Microsoft Teams, but you see an "Access denied" message. This usually happe...

Fix Windows Activation Proxy Server Error

When you try to activate Windows and see an error about a proxy server, it usually means the acti...

Fix Microsoft Teams Token Expired Not Working

If you see "token expired" in Microsoft Teams and the app stops working, it usually means your au...

Fix Windows Activation Failed: Product Key Blocked Error

You try to activate Windows and see: "Activation failed. The product key you entered didn't work....

Fix Outlook Email Sync Failed on Ubuntu

Outlook email sync fails on Ubuntu: what to check

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