Checklists for software errors, setup, and tool workflows.

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Windows Security Full Scan Stuck at 99% – How to Fix

You run a full scan in Windows Security, it reaches 99%, and then nothing happens for minutes or ...

Microsoft Teams Setup Update Fails Silently: Fixes

You click 'Check for updates' in Microsoft Teams, the installer runs, but nothing changes. No err...

Fix Windows Defender 404 Not Found After Update

After installing a recent Windows update, some users find that Windows Defender is missing or sho...

Where Windows Defender Stores Its Cache Files

If Windows Defender (now Microsoft Defender Antivirus) won't update definitions, hangs during sca...

Fix PowerShell Execution Policy Restricted via Registry

When you try to run a PowerShell script and see an error like … cannot be loaded because ru...

Fix Windows Defender Real-Time Protection Greyed Out
You open Windows Security, go to Virus & threat protection, and see that the Real-time protection...