Checklists for software errors, setup, and tool workflows.

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Fix Apache Not Starting: Port 80 Already in Use

When Apache fails to start with the error (98)Address already in use: AH00072: make_sock: c...

Fix PowerShell Settings Reset After Windows Update
After a Windows update, you may find that your PowerShell settings—such as execution policy, prof...

Fix PowerShell 504 Gateway Timeout After Windows Update
After a recent Windows update, some users see a 504 Gateway Timeout error when running PowerShell...

Troubleshoot 504 Gateway Timeout in Windows Security App
When you open Windows Security (formerly Windows Defender Security Center) and see a 504 ...

Fix Microsoft Teams Camera Not Working in Meeting
You join a Teams meeting and your video is black, or you get an error that the camera can't be fo...

Fix Windows Defender Proxy Error: Permission Denied
You try to update Windows Defender or run a scan and get an error like "Permission denied"

Checklists for software errors, setup, and tool workflows.

Latest checklists

Fix Apache Not Starting: Port 80 Already in Use

Fix PowerShell Settings Reset After Windows Update

Fix PowerShell 504 Gateway Timeout After Windows Update

Troubleshoot 504 Gateway Timeout in Windows Security App

Fix Microsoft Teams Camera Not Working in Meeting

Fix Windows Defender Proxy Error: Permission Denied

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