Microsoft to block Exchange Online access for outdated mobile devices
ID: 7d018b94-daec-509f-bc0e-71ea626e65d6
STIX ID: report--7d018b94-daec-509f-bc0e-71ea626e65d6
Feed Name: Bleeping Computer
Microsoft announced that, beginning March 1, 2026, Exchange Online will block mobile devices using Exchange ActiveSync (EAS) versions below 16.1, prompting organizations to update native email apps; Outlook Mobile is unaffected, iOS Mail has supported EAS 16.1 since iOS 10, and vendors like Google and Samsung are updating their clients. Microsoft also provided a PowerShell command to help administrators identify devices running older EAS versions to ensure a smooth transition.
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