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highExchangeExchange Onlinedeprecationm365_message_center · Aug 5, 2026
Microsoft Exchange Online: Prepare for Exchange Web Services retirement with EWSAllowedAppIDs
Microsoft is retiring Exchange Web Services (EWS) in Exchange Online, with full retirement starting April 1, 2027. Administrators are advised to prepare by using the new EWSAllowedAppIDs configuration.
“Services: Exchange Online. <p><b>[What and why]</b></p><p>Exchange Web Services (EWS) in Exchange Online will begin retirement on <b>October 1, 2026</b>, with <b>full retirement beginning April 1, 2027</b>.</p><p>To help organizations prepare, Microsoft has released <b>EWSAllowedAppIDs</b>, a new Exchange Online conf…”
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admin
Environment
cloud
Classification confidence: 95%
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