Modern authentication with Azure AD for WinForms (native) apps (cmatskas.com)
At this point everything should resolve fine apart from the 'TokenCacheHelper'. That's a special class that we will use to cache our token info locally and avoid prompting the user to login every time!
A custom serialization is needed on .NET Framework and .NET Core
In the case of .NET Framework and .NET core, the libraries also provide a default cache but this only lasts for the duration of the application. To understand why, remember that ADAL .NET desktop/core applications can be Web applications or Web API, which might use some specific cache mechanisms like databases, a Redis cache, etc .... To have a persistent token cache application in .NET Desktop or Core developers need to customize the serialization. The way to do it is different for public client applications and confidential client applications.
标签：AD,cache,applications,Token,Azure,serialization,NET From： https://www.cnblogs.com/chucklu/p/17148822.html