I've added new users to the PowerApp and while they have the correct permissions enabled (i.e., they're designated as a CDS user in Dynamics), when the user loads the PowerApp they encounter the message: "An error occurred on the server. Server Response: Principal user (Id=<userid>, type=8, accessMode=1, roleCount=2) is missing prvReadAccount privilege (Id=<id>)" and nothing loads in the app. The error messages flash frequently and cycle through all of the other entities, both standard (e.g., Account, Contact) and custom and then eventually stop, but still no data loads. As you can see in the attached screenshot, users are able to view the structure of the app but there's just no data present. Other users have no problems, despite having the exact same roles and permissions. I've tried revoking then regranting privileges, as well as designating the new users as System Administrators, but nothing works. Is this a known issue and how can I fix it?
Based on the error message that you provided, I think the end user has not been assigned a proper permission to access your CDS Entity.
When sharing an app which connects to a CDS Entity with other users, you must also ensure that the users who will run it have the appropriate permissions for the entity. You must firstly define a security role which has proper permission to perform tasks such as creating, reading, writing, and/or deleting within the relevant entity, and then assign the security role to the other users.
More details about managing CDS Entity permission, please check the following article:
I do have the proper security roles assigned. All of the users have the same roles but only some are getting this error message. I have no idea why because they're identical. I think this may be a bug in PowerApps.