@Nicholas
Hi,
If you see "Error 1181" while stopping the Package Inspector, you'll need to increase your USN journal size and then clear all of the cached data before re-scanning the impacted apps.
You must make sure that you clear the cache by creating and setting a new temporary policy. If you reuse the same policy, the Package Inspector will fail.
You could refer to the following link as your reference:
https://github.com/yannanwang1/win-cpub-itpro-docs/blob/master/windows/keep-secure/getting-apps-to-run-on-device-guard-protected-devices.md
Please note: Information posted in the given link is hosted by a third party. Microsoft does not guarantee the accuracy and effectiveness of information.
Hope above information can help you.
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