Fix 'PowerShell Not Recognized as Internal or External Command'
When you type powershell in Command Prompt or a script and see 'powershell' is...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listHow to Fix Outlook 502 Bad Gateway Error
When you see a 502 Bad Gateway error in Outlook, it usually means the server rec...
How to Fix Windows Update Certificate Trust Error
You see a message like "Windows could not search for new updates" or "An error occurred while che...
Windows Activation Proxy Error: Complete Troubleshooting Checklist
When you see a Windows activation error that mentions a proxy, it usually means the activation cl...
Fixing Outlook Dependency Conflicts with Office 365
When Outlook stops working after an Office 365 update or a new add-in, a dependency conflict is o...
Fixing Windows Security Proxy Configuration Issues
When Windows Security (formerly Windows Defender Security Center) can't update virus definitions ...
Topic paths
Quick titles
How to Fix Outlook Configuration ErrorsCommand Prompt SSL Certificate Error: Not Trusted – SolutionsUnderstanding Outlook's Rate Limit Error CodeHow to Fix Windows Update Error 0x80070002 Due to Network IssuesHow to Fix Chrome Profile SSL Certificate ErrorRemote Desktop Black Screen Step-by-Step GuideWindows 10 Update Cache: How to Delete SafelyFix Windows Defender Connection Timeout Error 0x80070422