Your Tenant Might Be Impacted by the way to control EWS usage in Exchange Online is changing

Your tenant might be impacted by changes to the EWS usage control in Exchange Online. The EWSEnabled parameter is set to False, but some users are still accessing EWS. Review the previous announcement and blog post to make necessary changes before the update is applied. More information: [The way to control EWS usage in Exchange Online is changing](https://aka.ms/EWSEnabledChange). This is a supplementary post to the recent announcement titled “The way to control EWS usage in Exchange Online is changing,” (February ’25) and it is specific to your tenant. Please read this post thoroughly. As previously stated, we are announcing a significant change to the behavior of the EWSEnabled tenant-wide switch in Exchange Online. How this affects your organization: We have detected that your tenant has the organization-wide EWSEnabled parameter set to False, but some users are still making successful requests over EWS. Unless you take the actions noted in the previous post, this traffic will be blocked when the update is applied. What you can do to prepare: We strongly advise you to read the previous post carefully, review the following blog post, and make all necessary changes to your tenant as soon as possible. More information: The way to control EWS usage in Exchange Online is changing Message ID: MC1015906

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