Cause of System.Exception: The device does not support the command feature. (Exception from HRESULT: 0x8007013C)

Question

WARNING! There was an error parsing the document

Hello, I implemented a Gatt server in my UWP application using this documentation: https://learn.microsoft.com/de-de/windows/uwp/devices-sensors/gatt-server
This allows me to use the Windows PC as a peripheral role for Bluetooth Low Energy devices. Everything works as expected for me and many other users. The problem is: I get a lot of mails that some users get the following exception. (Bluetooth is of course supported and the latest drivers are installed. I also tried to check in system settings -> Privacy -> (left below "App permissions“) Other devices if the application is allowed, but without success.) I don't find any useful documentation on this and have no idea why it does work on some and doesn't for other computers. Does anyone have an idea, why this error occurs and what I can do about it? Thanks in advance.

System.Exception: The device does not support the command feature. (Exception from HRESULT: 0x8007013C)
at System.Runtime.InteropServices.McgMarshal.ThrowOnExternalCallFailed(Int32, RuntimeTypeHandle) + 0x21 
at _Interop.ComCallHelpers.Call(__ComObject, RuntimeTypeHandle, Int32, Void*) + Oxbe at _Interop.ForwardComStubs.Stub_6[TThis, TArgO](__ComObject, TArgO, Int32) + 0x5a at MyApp.Helpers.BluetoothManager.<StartService>d_7.MoveNextO + 0x87f

Answer 1

Hi @WorldOfBasti ,

The property value of Bluetooth radio supports Low Engery Peripheral Role is false, this means the Bluetooth radio hardware on the system does not support LE peripheral role and thus the GATT server APIs cannot be fully used.

Thank you.

---

If the answer is the right solution, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment". Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.