@Fung, Sammy Thanks for posting in our Q&A.
Honestly, I'm not familiar with AppLocker issue and there is no helpful information I can share with you. Please keep this post and wait someone else share more information.
Or it is suggested to create an online support ticket to get more accurate help. Here is the support link:
https://learn.microsoft.com/en-us/mem/get-support
Thanks for your understanding.
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