Our company, being an UWP app developer, has faced the following problem. After changing the authorization policy, the Dropbox no longer supports the OAuth app authorization flow in web views, we need to update our app to process the OAuth app authorization flow in the user's system browser.
We are currently using a Web Authentication Broker, which Microsoft recommends to use in such cases as a reliable and validated tool. Now this is not possible and we will have to develop our own solution for secure and reliable authentication.
Since this can be a long and laborious process for our company, our users will not be able to connect to their accounts during this entire long period.
We still do not understand what this Dropbox decision is connected with? Why it was necessary to prohibit the use of Web Authentication Broker, which will clearly hook a large number of UWP application developers and will not benefit users. With all this, an example of implementation still does not exist.
And also please explain what to do with the versions of our application for old versions of Windows, which we cannot update in any way, but users use them and write to us that Dropbox does not work?