Internal error opening MobileMapPackage with UNC path

[WillMebane]

I am attempting to load a mobile map package from a UNC path (), but getting the following exception:

Esri.ArcGISRuntime.ArcGISRuntimeException: 'Internal error'

I am loading the map package with the following line:

MobileMapPackage sourceMapPackage = await MobileMapPackage.OpenAsync("\\computer_name\Share\OperationalLayers\OperationalLayers.mmpk");

I don't have any issues if I use a path to a folder in my local machine, or if I map the network location to a local drive.  Are UNC paths supported, and if so, is this a bug or should I be loading it differently?  This is with Runtime 100.1

[MichaelBranscomb]

Hi,

Are you able to reproduce with v100.3?

Cheers

Mike

[dotMorten_esri]

Are you using WPF? (this wouldn't work in UWP)