diff --git a/auth_oauth_microsoft/models/res_users.py b/auth_oauth_microsoft/models/res_users.py
index 8e11a49f..d470c6dd 100644
--- a/auth_oauth_microsoft/models/res_users.py
+++ b/auth_oauth_microsoft/models/res_users.py
@@ -27,7 +27,7 @@ def _auth_oauth_validate(self, provider, access_token):
 
         provider_obj = self.env["auth.oauth.provider"].browse(provider)
         if _is_microsoft_endpoint(provider_obj.auth_endpoint):
-            validation["user_id"] = validation["email"]
+            validation["user_id"] = validation.get("email") or validation["sub"]
 
         return validation