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Bug: Unable to install app due to 0x800B0109 certificate error with Files.stable.appinstaller #17976

@DominoKorean

Description

@DominoKorean

Description

I live in South Korea, but in the Microsoft Store the app is locked to the Hungary region and currency, so I am unable to install it through the Store.
Because of this, I have to install the app using the appinstaller file instead.

However, when trying to install either Files.stable.appinstaller or Files.preview.appinstaller, the installation fails with the following error:

App installation failed with error message: error 0x800B0109: The root certificate of the signature in the app package or bundle must be trusted. (0x80070570)

Due to this error, installation is not possible.
I have tried installing both via Windows Update and via PowerShell, but neither method worked.

Steps To Reproduce

  1. Run the appinstaller file
  2. Click the Install button

Files Version

4.0.21.0

Windows Version

22631.6199

User ID

No response

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