Checklists for software errors, setup, and tool workflows.

Fix Ubuntu apt update GPG missing key error

When running sudo apt update, you might see an error like:

The following sig...

Fix Windows Defender Permission Denied When Scanning a Folder

You try to scan a folder with Windows Defender and see 'Permission Denied' or 'Access Denied'. Th...

Fix BitLocker Backup Failed Error 0x80070057

When you see "BitLocker backup failed" with error code 0x80070057 in Event Viewer or the BitLocke...

Fix Windows Activation Service Not Running

If you see an error saying the Windows Activation service is not running, your system may not be ...

Fix PowerShell Access Denied for Network Path

When you run a PowerShell command that accesses a network share or remote path, you may see an 'A...

Fix Windows Defender Threat Service Not Running Error

You open Windows Security and see a yellow warning: “Threat service has stopped. Restart it now.”...