
Windows Defender Service Troubleshooting Checklist
If Windows Defender won't start, won't update, or shows error messages like "Service stopped" or ...
Software troubleshooting desk

If Windows Defender won't start, won't update, or shows error messages like "Service stopped" or ...

You open Chrome, click the extensions icon, and nothing shows up—or you get an error message like...

You open Windows Terminal expecting to be signed into Azure AD or Microsoft 365 automatically, bu...

When PowerShell shows a 404 Not Found error, it usually means the system cannot locate a file, mo...

When Chrome shows 'DNS_PROBE_FINISHED_NXDOMAIN' or 'ERR_NAME_NOT_RESOLVED', your browser can't tr...

If Chrome is using an unusual amount of CPU, extensions are a common culprit. You might notice yo...