Microsoft will no longer support older versions such as Outlook 2010 to connect to Microsoft 365 Exchange from November
According to the support announcement issued by Microsoft, the support for basic authentication of Microsoft 365 series software is about to end. Now Microsoft mainly uses modern authentication protocols to improve account security. Microsoft writes:
Older versions of Outlook such as Outlook 2007 and 2010 are incompatible with the following upcoming service changes, which is prompting this controlled block:
- Support for basic authentication is ending to increase the security of Microsoft 365 by relying on modern authentication protocols, which are not only more secure, but also provide compliance and policy controls to help you manage your data.
- We’re working on adding support for HTTP/2 in Microsoft 365. HTTP/2 is a full duplex protocol, which decreases latency through header compression and request multiplexing. On the service side, we’ll be able to better prioritize requests and more effectively push data to clients.
Since the current date is very close to the end of support, Microsoft said that the company is actively contacting customers to help customers complete the upgrade before the deadline. For companies still using Microsoft Outlook 2010 and earlier versions, they should contact the local Microsoft Customer Service Center or authorized agents for help in time. Simply put, upgrade to the new version as soon as possible. Otherwise, the mail system cannot be connected suddenly after November 11, which may cause a serious impact.