Windows 10 Search not finding apps and files correctly anymore

Your Windows 10 search intermittently omits apps, files, and settings, while restarting restores it only temporarily. That usually points to a stalled Search process or unhealthy index rather than requiring Windows reinstallation. Install pending updates, then run the Search and Indexing troubleshooter from an elevated Command Prompt with msdt.exe -ep WindowsHelp id SearchDiagnostic. In Task Manager, end SearchUI.exe; Windows starts it again on the next search. Confirm missing file locations are included in Indexing Options, then choose Advanced and Rebuild, allowing the index time to finish. Test a newly created Windows account: if search works there, the fault is profile-specific. Microsoft also provides ResetWindowsSearchBox.ps1 for Windows 10 version 1903 or later; run that official script as administrator and restore your previous PowerShell execution policy afterward. If the problem continues, note whether files, apps, or settings fail separately and submit those details through Feedb