Fix Windows Security Path Not Found Error (Code 0x80070003)
When you open Windows Security (formerly Windows Defender Security Center) and see an error like ...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix Windows Security Service Not Running Error
You open Windows Security and see a red banner: “Windows Security service is not running.” Or you...
Fix Windows Search 'Token Expired' Error in Office 365
You search for a file or email in Windows, and instead of results you see a message like 'Token e...
Windows Security Log 4625 Failed Login Troubleshooting
When you see event ID 4625 in the Windows Security log, it means an account failed to log on. Thi...
How to Fix Windows Defender Service Not Running
If you see a message that Windows Defender is not running or the security center shows it's off, ...
Fix Windows Security Not Starting After Update
After a Windows update, you might find that Windows Security won't open, or it shows a blank wind...
Topic paths
Quick titles
How to Make Windows Search Settings StickFix High Memory Usage in Windows TerminalHow to Fix Module Not Found in Task SchedulerFix Microsoft Teams Slow Performance After Update RollbackFix Activation Errors with Administrator RightsFix SSH Host Key Verification Failed on Windows 10Remote Desktop Not Connecting in Windows 10: Practical FixesHow to Fix Windows Defender Authentication Failed