Checklists for software errors, setup, and tool workflows.

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Windows Security App Not Opening After Update: Fixes

After a Windows update, the Security app may refuse to open—clicking the icon does nothing, or it...

Microsoft Teams Auto Start Not Working: Troubleshooting Checklist

You open your PC expecting Microsoft Teams to launch automatically, but it doesn't. This guide wa...

Fix 'Service Unavailable' for PowerShell on Windows 10

You open PowerShell on Windows 10 and see an error like "Service Unavailable" or "PowerShell is n...

Fix Windows Defender Network Error in Configuration Tool

When you open the Windows Defender Configuration Tool and see a network error, it usually means t...

Fix BitLocker Error 404 Not Found After a Windows Update

After a Windows update, some users see a BitLocker error that reads something like "Error...

How to Fix Windows Defender 502 Bad Gateway Error
If you see a '502 bad gateway' error in Windows Defender, it usually means the security service c...