Access denied when trying to launch Web Account Provider.

Question

Hi,

I am a newcomer of Windows programming and trying to build a Web Account Provider on Windows 10.

Reference the site:
http://channel9.msdn.com/Events/Build/2015/2-709

Now, I have successfully register a web account provider, but I have a trouble of "Access denied" when trying to launch my provider by "tokenbroker" which is a sample of universal app from github. https://github.com/Microsoft/Windows-universal-samples/tree/master/tokenbroker

The following is the runtime exception message:

Exception thrown at 0x00007FFDF69818F8 (KernelBase.dll) in TokenBrokerCPP.exe: 0x40080201: WinRT originate error (parameters: 0x0000000080070005, 0x0000000000000013, 0x000000146EE9D0E0).
Exception thrown at 0x00007FFDF69818F8 in TokenBrokerCPP.exe: Microsoft C++ exception: Platform::AccessDeniedException ^ at memory location 0x000000146EE9D630. HRESULT:0x80070005 Access is denied.
WinRT information: Access is denied.

In fact, the same issue occured when I tried to launch MSA provider or AAD provider. I have no idea about it.

Would some one have the experience or idea about it?

Thank you.