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Fix PowerShell Invoke-WebRequest 404 Not Found Errors - Step-by-Step: Clear Windows Activation Cache-Resolve Windows Search Index Migration Denied Access

Updated 2026-06-13 19:34:53developer-tools
Fix PowerShell Invoke-WebRequest 404 Not Found Errors - Step-by-Step: Clear Windows Activation Cache-Resolve Windows Search Index Migration Denied Access
Before changing system settings, save your work and note the exact error text so you can compare results after each step.

Extra verification checklist

  • Restart the affected app after changing permissions or configuration files.
  • Test the same workflow in a clean browser profile or a temporary user account.
  • Compare the result on another network if the error may be connection related.

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