Which app is behind this EWS application ID?
Paste an application ID from the Exchange Web Services usage report in the Microsoft 365 admin center. You get the app, the vendor, and, where the vendor has published one, its plan for moving off EWS before full retirement of EWS in Exchange Online begins on 1 April 2027.
Tell us what it is and it will be added after a check against a public source.
Some apps register in your own tenant, so their ID is different everywhere (Veeam, BitTitan and others). LazyAdmin's table of tenant-specific apps says where to find each one.
3,461 application IDs, each with its source. Updated 2026-10-22.
Load your EWS usage report free and see every app in it. $49 per tenant adds each vendor's migration status and the allow-list check.
Planning for 1 April 2027?
Full retirement of Exchange Web Services in Exchange Online begins on 1 April 2027, and since October 2026 an app needs to be on your tenant's EWS allow list to keep working. The tenant plan reads your EWS usage report in your browser and gives you, for every app in it:
- the vendor and, where the vendor has published one, its plan for moving to Microsoft Graph, with the date and a link to the notice;
- whether each app is on your allow list, so you catch apps the automatic list did not include;
- a downloadable plan you can re-run until 1 April 2027.
$49 per tenant, or $199 for ten tenants with a view across all of them. See pricing.
Vendor statuses so far: 62 products from 50 vendors, each with its date and the vendor's own notice.
Background: EWS retirement dates, the EWS usage report, EWSAllowedAppIDs.