Hello Grimm, Thomas,
Thank you for reaching out regarding the issue you’re experiencing when trying to sign in to your Cloud PC from an iPad using the Microsoft app. The error you’re seeing typically occurs when the Remote Desktop client on iPadOS is outdated, the Cloud PC session host cannot be reached, or required permissions have not been granted. I recommend first updating the Microsoft Remote Desktop app to the latest version from the App Store and ensuring that the iPad has a stable network connection. Please also verify that your Cloud PC is in a “Running” state in the Windows 365 portal and that your account has the correct license assigned.
If the issue persists, signing out of the app completely and re‑adding your workspace often resolves authentication or token‑related errors. Should none of these steps help, your administrator may need to review Conditional Access or network policies that could be blocking the connection.
I hope this guidance helps you restore access to your Cloud PC. If this resolves your question, please consider clicking “Accept the Answer” so others in the community can benefit from the solution.
Thank you so much!!
Best regards,
QQ.