We are using Microsoft\'s Identity Framework v2.0 in a web forms application. All is working well. We decided we want to add email verification as part of the new account set
I think the problem in DpapiDataProtectionProvider - If you use the same instance of this class in creating and validating the token, it'll work fine.
DpapiDataProtectionProvider
Any reason you are not getting UserManager from Owin Context as per VC2013 template?
UserManager