Hi @Manuel Maliszewski ,
Currently the Microsoft App Access panel is not onboarded yet into Conditional Access policies and the product group is still working to onboard this feature. While you can normally select "My Apps" when setting up Conditional Access rules, myapps has an underlying dependency application that is still under development and currently cannot be excluded.
This request has come up quite a few times and I have reached out to the product team and created a feature request to bubble this issue up with them, and have asked for an ETA. I also tested recently and saw that it is still not there, but I'll keep you posted if I hear anything new.
You are also welcome to create a feature request in the Ideas forum for this.
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