Basic authentication simply means the application sends a username and password with every request, and those credentials are also often stored or saved on the device. Read the rest of this article to fully understand the changes we're making and how these changes might affect you.įor many years, applications have used Basic authentication to connect to servers, services, and API endpoints. Now that the date has passed, you (or support) can't re-enable Basic authentication in your tenant.īasic authentication is now being disabled in all new tenants, or wherever it is still enabled. With this release, apps can use one of the following OAuth flows to authorize and get access tokens on behalf of a user.įollow these detailed step-by-step instructions to implement OAuth 2.0 authentication if your in-house application needs to access IMAP and SMTP AUTH protocols in Exchange Online, or work with your vendor to update any apps or clients that you use that could be impacted.If Basic authentication was disabled in your tenant and users and apps were unable to connect, you had until Dec 31 2022, to re-enable the affected protocols. This functionality is built on top of Microsoft Identity platform (v2.0) and supports access to email of Microsoft 365 (formerly Office 365) users.ĭetailed step-by-step instructions for authenticating to IMAP and SMTP AUTH protocols using OAuth are now available for you to get started. This feature announcement is for interactive applications to enable OAuth for IMAP and SMTP.įor additional information about non-interactive applications, please see our blog post Announcing OAuth 2.0 Client Credentials Flow support for POP and IMAP protocols in Exchange Online.Īpplication developers who have built apps that send, read or otherwise process email using these protocols will be able to implement secure, modern authentication experiences for their users. Today, we’re excited to announce the availability of OAuth 2.0 authentication for IMAP and SMTP AUTH protocols to Exchange Online mailboxes. Ever since we announced our intention to disable Basic Authentication in Exchange Online we said that we would add Modern Auth (OAuth 2.0) support for the IMAP, POP and SMTP AUTH protocols.
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