[kaliszad]

Also they now require you to become Microsoft Partner, if you want to use the oauth2 login not only for personal Microsoft accounts but also other Microsoft accounts such as those provided by a business running Office 365. They changed it ~ 3 months ago and are now not able to verify people in time. Even if they just want to check your name, email and maybe a profile picture and nothing else. The process is much less obvious than for the same thing with Google or Facebook. Even the ZIP-Code has to include spaces as if it was written on a letter, otherwise you will not be able to send the form, aaaand there is no hint about this requirement.

In general, Microsoft, Google and others are behaving really enterprise-y in that they are slow, you cannot reach anybody of importance to solve massive issues with their products and everything is actually quite expensive for what it does.