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Microsoft says both these versions are not compatible with the following changes: However, companies can often take much longer to upgrade services, usually because of costs associated with mass updates.įor those businesses still tied to Outlook 20, the time is coming where an upgrade is essential. If you are consumer, the idea of running 10-year-old platforms may seem odd outside of hobby machines. This may present some problems for organizations still running older versions of the Outlook email software. Specifically, the cutoff will happen from November 1, 2021. According to the company, only Outlook 2013 Service Pack 1 and later will be able to access Microsoft 365 servers. Microsoft has announced that all Outlook versions from Outlook 2010 and older will be cut off from Microsoft 365 Exchange servers.
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