AutoDiscover of Exchange on-premise requires authentication, by (bad) design. It is also very common for Microsoft Exchange on-premise to have usernames that are based on the Windows login username and domain and not on the email address. This means that many Exchange on-premise accounts are now broken, which worked before. This affects hundreds or thousands of users every day.
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AutoDiscover of Exchange on-premise requires authentication, by (bad) design. It is also very common for Microsoft Exchange on-premise to have usernames that are based on the Windows login username and domain and not on the email address. This means that many Exchange on-premise accounts are now broken, which worked before. This affects *hundreds or thousands of users every day*.
AutoDiscover of Exchange on-premise requires authentication, by (bad) design. It is also very common for Microsoft Exchange on-premise to have usernames that are based on the Windows login username and domain and not on the email address. This affects many Exchange on-premise accounts.