Issue with using StorageFolder in a Unity UWP App deployed on a Hololens

Question

I'm trying to access a SMB Share Drive from a Unity, UWP app on the hololens and I've tried to follow the approach in the following link:

How to access local network (SMB) in UWP?

I've defined the required (Capabilities, Share Targets and File Type Associations) in the Package.appxmanifest, as you can see in the following screenshot:

In my Unity script, I define the following:

if ENABLE_WINMD_SUPPORT && !UNITY_EDITOR

StorageFolder folder = await StorageFolder.GetFolderFromPathAsync(@"\\DESKTOP2GEQQ3D\FolderModels");

The "await" never returns, and I receive the following error:

"FileNotFoundException: Unable to find specified file.".

Any ideas why the await never returns and is stuck forever?? Surely if StorageFolder wasn't able to access "FolderModels", I would receive an "UnauthorizedAccessException" error.

My SMB Share Drive is visible to all other networks, my Hololens is on the same network as the SMB Share Drive...I'm running out of ideas...

Answer 1

The solution you referenced is not completely correct. I would recommend you checking the answer in MSDN forum: LINK.

The main points for fix as below:

1. The right capabilities we need to access network drive has been described here

   Please double check the Universal Naming Convention (UNC) folders part. The Proximity capability is irrelevant in our case.

2. The Share Target declaration is not the right one we need to set. Instead, please add File Type Associations declaration, see the official guidance: Handle file activation

For example, if we need to access .jpg and .txt files in the SMB folder, add the capabilities:

<Capability Name="internetClient" />
<Capability Name="privateNetworkClientServer"/>
<uap:Capability Name="enterpriseAuthentication"/>
<Capability Name="internetClientServer"/>

And set File Type Associations declaration:

<uap:Extension Category="windows.fileTypeAssociation">
          <uap:FileTypeAssociation Name="smbfolder">
            <uap:SupportedFileTypes>
              <uap:FileType>.txt</uap:FileType>
              <uap:FileType>.jpg</uap:FileType>
            </uap:SupportedFileTypes>
            <uap:DisplayName>SMBFolder</uap:DisplayName>
          </uap:FileTypeAssociation>
        </uap:Extension>