Fix 'Not Recognized as Internal or External Command' Error
You type a command in Command Prompt and see "'command' is not recognized as an internal or exter...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listHow to Recover Missing Sync Data in Firefox Profiles
You open Firefox after a profile switch or reinstall and your bookmarks, passwords, or open tabs ...
Fix Chrome Freezing or Not Responding When Downloading Files
You click a download link in Chrome, the browser freezes, and you see a "Not Responding" message....
How to Fix PowerShell 404 Not Found Error
When you see a 404 Not Found error in PowerShell, it usually means something the command tried to...
How to Fix Chrome Authentication Failed Error
When Chrome shows an 'authentication failed' error, it usually means the browser can't verify you...
BitLocker Setup: Fixing 502 Bad Gateway Errors
You're trying to set up BitLocker on a Windows machine, but the management console or recovery ke...
Topic paths
Quick titles
Windows Search Registry Permission Fix GuideHow to Use --legacy-peer-deps in npmResolve Windows Defender Permission Denied IssueStop Defender Scanning Ubuntu FilesFix OBS Black Screen with No Source DetectedWindows 10 Update Path Not Found Error FixHow to Fix Access Denied in Command PromptHow to Fix Windows Defender Blank Screen