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David Bak PosadaMar 3, 20262 min read

The Upgrade from EWS to Microsoft Graph Is Here

Updated October 2026. Microsoft started retiring EWS for Exchange Online on October 1, 2026, and completes the retirement in April 2027. AskCody's upgrade to Microsoft Graph, Microsoft's modern and supported API, is now released and scheduled upgrades for eligible customers ran through August and September. If your Exchange Online integration has not been upgraded yet, a Microsoft 365 Global Administrator needs to grant the Microsoft Graph permissions now, and we run the upgrade for you.

You can read Microsoft's official announcement here. 

What this means for you

There are two paths, and the email we've sent your organization tells you which one you're on.

If your organization has already granted the Microsoft Graph permissions (this includes everyone using Central or Maps), there's nothing you need to do. We'll run the upgrade for you in one of our scheduled windows and confirm when it's done. 

If your organization hasn't granted the permissions yet, that's the one thing we need. A Microsoft 365 Global Administrator grants them, either from your Exchange Online integration in the AskCody Management Portal or through the consent link in your email. Once they're in place, we schedule your upgrade and run it for you, normally within a few days. Without the permissions, your AskCody integration stops working as soon as Microsoft's EWS block reaches your tenant. The rollout started on October 1, 2026.

Click here to learn how to grant Azure Permissions.

Either way, the upgrade changes nothing in how AskCody looks or works for your users. Same add-ins, same portals, same displays. It's a change in how we read and update meeting data behind the scenes.

Haven't received the email, or not sure where you stand? Contact our support team and ask for your migration status. We'll check how ready your organization is, tell you if anything is needed on your side, and plan the migration with you.

If you would like to perform the upgrade yourself, see the Help Center article How to upgrade your Exchange Online integration to Microsoft Graph.

Permissions for the Microsoft Graph integration

The permission set does not change with this migration. The Graph integration uses the same Microsoft permissions AskCody already documents and uses today. Organizations running Central or Maps have already granted these permissions, so there is nothing new to review or approve. Organizations not yet using Central or Maps grant the same set as part of the upgrade.

The full permission list, the purpose of each permission, and the AskCody applications that use it are maintained in the Help Center article Permissions used and required connecting AskCody with MS Graph and Entra ID, which is the single source of truth for a security review.

Note: this change only affects Exchange Online. Microsoft is not retiring EWS for on-premises Exchange, so on-premises connections are unaffected.

 

The timeline

  • August: upgrade emails go out to all customers. From that moment, any organization can upgrade itself from the AskCody Management Portal in one short flow, permissions included.

  • August and September: we run the upgrade for the remaining organizations in scheduled windows, with a confirmation email per organization. Prefer a specific week? Reply to your upgrade email and we'll schedule it.

  • October 1, 2026: Microsoft started disabling EWS for Exchange Online, tenant by tenant.
    April 2027: Microsoft completes the rollout and EWS is permanently removed from Exchange Online.

If you have any questions, our support team is ready to assist.

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David Bak Posada
Manager of Product @AskCody improving workplace experiences through better scheduling, collaboration, and meeting management. Engineer by background, curious about technology, product strategy, and user experience.