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Home / developer-tools / Microsoft Store Troubleshooting Guide: Step-by-Step Fixes - How to Fix Windows Store Error 0x80073cf9-How to Get Windows Security Working Again

Microsoft Store Troubleshooting Guide: Step-by-Step Fixes - How to Fix Windows Store Error 0x80073cf9-How to Get Windows Security Working Again

Updated 2026-06-13 17:31:21developer-tools
Microsoft Store Troubleshooting Guide: Step-by-Step Fixes - How to Fix Windows Store Error 0x80073cf9-How to Get Windows Security Working Again
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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