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Unable to create New App using Powerapp Studio for Web


I receive the error below when I try to create a new app using Powerapp Studio for Web. Please advise. Thanks.



WebAuthoring abnormal termination.
Client date/time: 2016-12-22T18:55:15.274Z

Version: 2.0.570
Session ID: a3826b6a-915a-92ec-da42-c7ca0d6b150c
errorMessage: Uncaught Error: Core.ApplicationError: [InvalidAuthenticationResult] AuthenticationResult is not valid. Error: Failed to parse the WebAuthenticationResponse.


Based on the session id this looks like the same authorization problem that was resolved yesterday, on another thread, by adding to the Trusted Sites list.

Please provide the session id of the failure. The "abnormal termination" message cannot be used to correlate issues, it is a generic message for catastrophic failure.

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