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mediumExchangeupdatem365_message_center · Sep 9, 2026

Microsoft Exchange Online: Review and configure EWSAllowedAppIDs before Exchange Web Services access changes

Microsoft is updating the EWSAllowedAppIDs setting in Exchange Online to help organizations manage applications that still require EWS access before its retirement, enhancing security and compliance.

“Services: Exchange Online. <p><b>[What and why]</b></p><p>As part of the final phase of Exchange Web Services (EWS) retirement, Microsoft is updating how the <b>EWSAllowedAppIDs</b> setting is applied in <em>Exchange Online</em>. This change is designed to help organizations identify and manage applications that stil…”
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Security
cloud_securityendpoint_security
Audience
admin
Environment
cloud
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Microsoft Exchange Online: Review and configure EWSAllowedAppIDs before Exchange Web Services access changes | 365Forge