Windows Defender Troubleshooting Guide for IT Admins
Windows Defender (Microsoft Defender Antivirus) is the default endpoint protection in Windows 10 ...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listHow to Fix Windows Activation Failed to Start Permission Denied
You try to activate Windows and get an error: "Activation failed to start" with "Permission denie...
Fix Chrome Profile Version Mismatch Error
When you see the error message "Your profile cannot be used because it is from a newer version of...
How to Fix Outlook DNS Error When Sending Email
You're composing an email in Outlook, hit Send, and get an error like "Your server does not suppo...
Fix 'Permission Denied' in VS Code Terminal on Ubuntu WSL
If you see 'permission denied' when running commands in the VS Code integrated terminal on Ubuntu...
Fix 'Chrome Browser Path Not Found' in Selenium
When running Selenium tests, you may see an error like selenium.common.exceptions.WebDriver...
Topic paths
Quick titles
Troubleshooting BitLocker Network Unlock Error 0x80070035How to Fix Windows Security Proxy Error After UpdateFix 'Windows Update Port Already Allocated Permission Denied'Troubleshoot Chrome Profile Not Loading on StartupFix Windows Search Not Working After UpdateBitLocker Authentication Failed: Troubleshooting StepsFix Outlook 0x8004010f When Settings ResetFix Windows Activation Error 0x8007000d Connection Refused