If you are running IIS as a reverse proxy for Tableau, you may have an error bringing up the views in your workbooks. I received "a potentially dangerous Request.Path value was detected from client.." If you get this, add the following to the web.config (some re-write rules should already be here, and just add <system.web> section if it is not there) of your reverse proxy and you should be good to go:
<httpRuntime requestPathInvalidCharacters="" requestValidationMode="2.0" />
<pages validateRequest="false" />
Thank you Jonathan.