Windows App Cert Failed: System.Net.json

Question

Trying to upload an App to the Windows 8 Store and running into the following error.

Error Found: The supported APIs test detected the following errors: API System.Globalization.CultureInfo.#ctor(System.String,System.Boolean) in MSCORLIB, PUBLICKEYTOKEN=B77A5C561934E089 is not supported for this application type. System.Net.Json.dll calls this API.

Any ideas on this? I am using a HttpClient that supports the new Async function calls. I made sure I cleaned and rebuilt in "release mode". Either way I'm guessing at this point.

Thanks

Answer 1

The Json.NET library supports Metro/Store apps, try using it instead of your current approach. And remember to compile all the libraries your app uses in "Any CPU" architecture, so they can be used by ARM devices!