Checklist for Fixing Windows Security Startup Failure
When Windows Security (formerly Windows Defender) fails to start at boot, you may see an error li...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix Windows Update Error 0x800f0922: Pending Install Failed
You see a message that a Windows update is pending install, but it fails with error 0x800f0922. T...
Fix Windows Activation Offline Installer Not Working on Windows 10
You’ve downloaded the Windows 10 offline installer for activation, but it won’t run, hangs, or gi...
Fix PowerShell Backup Restore Error 0x80070005
When running a PowerShell script to restore a backup, you may encounter error code 0x80070005. Th...
Fix MySQL Connection Refused for Remote Access
When you try to connect to a MySQL server from a remote client and get ERROR 2003 (HY000): ...
Fix Windows Defender Service Not Running
If you see "Windows Defender service not running" or a red warning in Security Center, the underl...
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