HomeWinBuzzer NewsMicrosoft Cutting Off Outlook 2010 and Older from Microsoft 365 Exchange

Microsoft Cutting Off Outlook 2010 and Older from Microsoft 365 Exchange

Microsoft says from November 1, Outlook 2010 and older will no longer have access to Microsoft 365 Exchange servers.


has announced that all Outlook versions from Outlook 2010 and older will be cut off from Exchange servers. According to the company, only Outlook 2013 Service Pack 1 and later will be able to access Microsoft 365 servers. Specifically, the cutoff will happen from November 1, 2021.

This may present some problems for organizations still running older versions of the Outlook email software. If you are consumer, the idea of running 10-year-old platforms may seem odd outside of hobby machines. However, companies can often take much longer to upgrade services, usually because of costs associated with mass updates.

For those businesses still tied to Outlook 2007 and 2010, the time is coming where an upgrade is essential. Microsoft says both these versions are not compatible with the following changes:

  • 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.
  • Microsoft is 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.”


Microsoft says there are clear benefits to upgrading to newer Outlook versions, including fewer crashes (75% less), more security, and newer features. It is worth noting Microsoft has not been supporting Outlook 2007 or 2010 for years, but the company admits many customers still use the versions.

The company is now contacting those customers to help them transition to newer versions. Microsoft says any company still using Outlook 2007 or 2010 should contact customer support to take the next steps.

Tip of the day: Do you know that Windows 10 allows creating PDFs from basically any app with printing support? In our tutorial, we show you how this works via Microsoft Print to PDF and Bullzip PDF Printer to save a PDF from any app, even with advanced options like adjusted quality, multi-page printing, and password protection.

Last Updated on February 14, 2022 8:21 pm CET

Luke Jones
Luke Jones
Luke has been writing about all things tech for more than five years. He is following Microsoft closely to bring you the latest news about Windows, Office, Azure, Skype, HoloLens and all the rest of their products.