Can't access local disk from Windows 8 app What should I do?

Question

.NET

Wrote an app for Windows 8 as a Universal app. After launch, you need to work with files that are on the local drive. The location does not have enough access to select a file on the local drive C : D :. At the same time, there is access to the flash drive and everything works.
Maybe someone faced this problem how to solve it?
Below I give the included Capability
If we declare that we want to use Documents when adding to the Windows store, it asks for a certificate.
Maybe someone solved this problem. Tell me how to solve?

Answer 1

Maybe just not enough privileges?

Answer 2

I wrote about it
Here
's
what
's
included
about Name="privateNetworkClientServer" /
Capability Name="sharedUserCertificates" /

Answer 3

To access the C drive (and indeed to another folder outside the application data folder), the user must open the file picker or folder picker and select something there in no other way. Or, like in the metro commander, forcing the user to select the entire disk once so that the application can go where it needs to go without any problems.
Z.Y. Exceptions are only for pictures, audio-video and documents.