![]() ![]() Check your Message Center for any posts referring to Basic authentication, and read Basic Authentication and Exchange Online for the latest announcements concerning Basic authentication.īasic authentication in Exchange Online uses a username and a password for client access requests. If you've reached this page because Basic authentication isn't working in your tenant, and you haven't set up security defaults or authentication policies, then we might have disabled Basic authentication in your tenant as part of our wider program to improve security across Exchange Online. For more information, see What are security defaults?. I suspect they'll be taking a lot of heat for this in the coming months.If you've enabled security defaults in your organization, Basic authentication is already disabled in Exchange Online. The Microsoft Exchange team has spent a lot of time preparing for this major change, but the Outlook client team has failed to implement any solution in their software. ![]() Adding and removing an account seems to be the only way, but calendar and contact data is lost. It doesn't seem possible to change an existing account. Unless someone can confirm it works, I will avoid this for now.Īdding the registry key per the article above does not work. This article suggests it's as simple as changing a registry key on the machine, but I'm hesitant to try it in a production environment and my test environment can no longer be setup to mirror production. ![]() It may not be possible, so I thought I'd ask for the canonical answer here. ![]() I'm really trying not to just take the easy way out and create a new account inside the client because it screws up calendar and contacts. It seems today is the day Microsoft disabled Basic Auth on my account and I have 20 clients to switch to Modern Auth.Īnyone know how to switch an account inside the Outlook 365 client from Basic Auth to Modern Auth? ![]()
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