Checklists for software errors, setup, and tool workflows.

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Fix Windows Activation Connection Timeout After Network Change

If you recently changed your network—switched Wi-Fi networks, moved from Ethernet to Wi-Fi, or ch...

Fix Windows Defender Not Starting Due to Dependency Conflict

If Windows Defender won't start and you see an error about a dependency service or group failed t...

Fix Windows Update Error 0x80072efd: Connection Refused

When Windows Update fails with error 0x80072efd and a message that the connection was refused, it...

Fix Windows Defender 502 Bad Gateway Permission Denied

If you're seeing a '502 Bad Gateway – Permission Denied' error when using Windows Defender (Micro...

Fix Chrome Profile DNS Error on Windows 10

You might see an error like "DNS_PROBE_FINISHED_NXDOMAIN" or "ERR_NAME_N...

Fix Windows Update Token Expired by Resetting SoftwareDistribution Folder
If you see a Windows Update error mentioning an expired token, the update components may have sta...