Fix Windows Defender Missing After Update
After a Windows update, some users find that Windows Defender is missing from the system tray, Se...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix Windows Search Authentication Failed Error 0x80070005
When Windows Search fails with error code 0x80070005 and an "authentication failed" message, it u...
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 Windows Update Authentication Failed for Domain Users
If you're a domain user and see "Authentication failed" when checking for Windows Updates, the is...
How to Enable Windows Security Auto-Start in Windows 11
If you notice that Windows Security isn't opening automatically when you start Windows 11, or if ...
How to Find the Windows Activation Log File
If you're having trouble activating Windows or just want to verify your licensing status, the act...
Topic paths
Quick titles
Windows Defender Missing After Antivirus UninstallOutlook Setup Best Practices for Reliable EmailFix DNS Probe Finished NXDOMAIN on New Wi-FiPowerShell Offline Installer Dependency Error FixHow to Restore Missing VMware Virtual Ethernet AdapterPowerShell Offline Setup: Steps for IT ProsHow to Fix Remote Desktop Not Starting Automatically on Windows 11How to Resolve Chrome Installer Error 0x80070002