Microsoft is retiring Exchange Web Services (EWS) in Exchange Online. Whether this affects your Access Profile On-Premise installation depends on which email system Access Profile connects to. Use the scenarios below to find out what applies to you.
â ď¸Important: If you connect to Microsoft 365 / Exchange Online, action is required before 1 October 2026 to avoid disruption to mailbox and calendar integration.
Which scenario applies to you?
If you are not sure which email system Access Profile connects to, your IT support company or Microsoft 365 Global Admin can confirm. Mailboxes hosted on Microsoft 365, Outlook.com, or Exchange Online fall under Scenario 2.
Scenario 1: Access Profile On-Premise connected to on-premises Exchange Server
Microsoft's EWS retirement only affects Exchange Online. EWS remains fully supported on on-premises Exchange Server, so no action is needed for this change.
Access does recommend that you speak with your Account Manager about your options and longer-term roadmap.
Scenario 2: Access Profile On-Premise connected to Microsoft 365 / Exchange Online
Action is required before 1 October 2026. From that date, EWS is blocked by default in any Microsoft 365 tenant that has not been configured to keep it enabled. EWS will be switched off permanently on 1 April 2027.
â ď¸Important: Access Support cannot make this change on your behalf. The steps below must be completed by your IT support company or your Microsoft 365 Global Admin.
Re-enable EWS on your Microsoft 365 tenant
The process and the Access Profile App ID are the same as for cloud customers. Follow the full steps here.
The Access Profile App ID you will need is:
a7b883f4-4c85-475d-ae43-3aa754876a18
đNote: If you need assistance completing these steps, contact Microsoft Support as the tenant owner. Access Support is unable to access or modify your Microsoft 365 tenant settings.
Long-term impact
Re-enabling EWS keeps mailbox and calendar integration working until 1 April 2027 only. The new version of Access Profile that removes the reliance on EWS will be released on Access's cloud platform only and will not be available for on-premise installations.
Speak to your Account Manager about your options beyond 1 April 2027, including Access's SaaS-based Recruitment CRM solutions.
Further information
Microsoft's announcement
For background on the retirement timeline, see Microsoft's announcement: Exchange Online EWS, Your Time is Almost Up.
Mailbox-level EWS settings
Exchange Online applies EWS access at two levels: the organisation and the individual mailbox. If EWS has been re-enabled at the organisation level but a single user still cannot connect, your IT admin should also check that EWS is enabled on that user's mailbox specifically.
Other allow-listed applications
The PowerShell cmdlet used to allow-list the Access Profile App ID writes the complete list of allowed applications each time it runs â it does not add to an existing list. If your tenant has already allow-listed another application (for example, Mimecast), your IT admin must include all required App IDs in a single command to avoid removing existing entries. Full guidance is included in the cloud customer article linked above.
FAQs
Q1: Is this an Access product issue?
Answer: No. Microsoft is retiring Exchange Web Services across Microsoft 365 environments.
Q2: What happens after 1 April 2027?
Answer: Microsoft has announced that EWS will be permanently switched off and no further extensions or exceptions will be available.