@Christian
Thank you for your post!
To hide apps from end-users within the MyApps panel or Microsoft 365 launcher, you can follow - Hide Enterprise applications from end-users in Azure Active Directory documentation. Keep in mind, you'll need Application administrator privileges to hide an application from the MyApps panel or Microsoft 365 launcher, and Global administrator privileges are required to hide all Microsoft 365 applications.
PowerShell: To hide an application from the MyApps panel, you can manually add the HideApp tag to the service principal for the application. Run the following AzureAD PowerShell commands to set the application's Visible to Users? property to No
Connect-AzureAD
$objectId = "<objectId>"
$servicePrincipal = Get-AzureADServicePrincipal -ObjectId $objectId
$tags = $servicePrincipal.tags
$tags += "HideApp"
Set-AzureADServicePrincipal -ObjectId $objectId -Tags $tags
Thank you for your time and patience throughout this issue.
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