Fix 'powershell not recognized as internal or external command'
When you type powershell in Command Prompt or a script and see the error "'power...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix OneDrive Authentication Failed in Office 365
You see "OneDrive authentication failed" when signing into Office 365. This usually means OneDriv...
Fix Windows Defender Virus Definition Update Errors
When Windows Defender fails to update virus definitions, you might see error codes like 0x8007000...
Fix Microsoft Teams Mic Not Working with External Microphone
You plug in an external microphone, but Microsoft Teams still won't pick up your voice. This is a...
Fix Windows Update 502 Bad Gateway After Update
After installing a Windows update, you might encounter a 502 Bad Gateway error when trying to use...
How to Fix Cloudflare 521 Error on a WordPress Site
If you see a Cloudflare 521 error on your WordPress site, it means Cloudflare can't connect to yo...
Topic paths
Quick titles
Fix Python Import Error When Module Is InstalledTroubleshooting Remote Desktop Proxy ProblemsTroubleshooting BitLocker Network Unlock Error 0x80070035How to Fix Windows Activation Login Loop After ResetHow to Fix Chrome Profile Access Denied and Corruption ErrorsHow to Stop Chrome From Crashing on PDF FilesWindows Defender 0x80070422 Troubleshooting GuideOutlook Authentication Failed After Password Change Guide