Error writing Gatt characteristic: access denied

vishwanathkr

Hello,

I had a perfectly well running Metawear streaming app. But after some Windows updates, I am getting this access denied exception while writing Gatt characteristic to the board. I used the Metawear starter app in CSharp as the base to develop this one.

Exception thrown: 'System.UnauthorizedAccessException' in MetawearWpfWrapWin32.exe

Error writing gatt characteristic: Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))

The UWP version of my app seems to work fine. Its just with my .NET app. Both of them do the same thing btw. I believe it is a permissions thing, but I am clueless how to solve this. Any assistance will be highly appreciated. Thanks

Eric

You can try the workarounds listed on the MSDN forums.

https://social.msdn.microsoft.com/Forums/en-US/58da3fdb-a0e1-4161-8af3-778b6839f4e1/bluetooth-bluetoothledevicefromidasync-does-not-complete-on-10015063?forum=wdk

vishwanathkr

Thanks Eric. Trying the solution out. But the problem is genuine. Everyone using BLE on .NET on Windows build 1703 is facing issues with reading/writing Gatt characteristics, but the same thing on UWP platform is unaffected.

Eric

There's nothing you can do except try the workarounds in the aforementioned thread or wait for an update from MSFT.