_cparker We would like to ensure whether this deprecation will affect the way we access the EWS API. Below is how we create the access token and access the API. Could you please help verify if we will be affected once the deprecation is done?
Permission: full_access_as_app (Application Permission)
Access Token Request
Parameters
client_id: client id,
redirect_uri: redirect_uri,
grant_type: 'client_credentials',
resource: 'https://outlook.office365.com',
client_assertion_type: 'urn:ietf:params:oauth:client-assertion-type:jwt-bearer',
client_assertion: client_assertion
End Point
https://login.windows.net/tanant/oauth2/token?api-version=1.0
Request Headers
For GET requests
Authorization: Bearer <access token>
For POST requests
Authorization: Bearer access token
X-AnchorMailbox: user_mailbox