From: sL @simonl2002 via Twitter
Is OAuth access token endpoint having issues? Started getting 400s this morning from an Oauth2 setup that's worked fro months. Making request to login.windows.net/common/oauth2/… posting all the required params including 'grant_type', but getting 400 response AADSTS90014: The request body must contain the following parameter: 'grant_type'. This is not new oauth implementation however people have been using it to login for months.
Link to Tweet: https://twitter.com/simonl2002/status/649962953194774528
Thanks,
@AzureSupport