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EWS Setting Decoder
Paste one read-only PowerShell output → see what Microsoft's EWS switch-off does to your tenant, and what to check next. Nothing you paste leaves this page: no upload, no account, no AI call.
1. Run this read-only command
In Exchange Online PowerShell (it only reads settings; it changes nothing):
Get-OrganizationConfig -RetrieveEwsOperationAccessPolicy | Format-List EwsEnabled,EwsAllowedAppIDs,EwsApplicationAccessPolicy,EwsAllowList,EwsBlockList
Microsoft notes the -RetrieveEwsOperationAccessPolicy switch is needed to return the AppID list. App IDs are not passwords, but you can blank them out: the decoder only needs to know whether the list has entries.
2. Paste the output here
What this means
Your checklist
Need to sort every app before the switch-off?
The EWS Cutover Kit ($39) is a set of offline worksheets to list each app, decide keep for now / move to Microsoft Graph / retire, and plan your AppID allow list. It does not connect to or change your tenant.
Get the EWS Cutover Kit on Gumroad · Read the full EWS deadline page (free)
Microsoft's table, in plain English
| EwsEnabled | Once the phased change reaches your tenant |
|---|---|
| Empty (Null, the default) | Changed to False during Microsoft's rollout, which blocks EWS for all apps |
| True, AppID list has entries | Only apps on the list can use EWS |
| True, list missing or empty | No EWS allowed (cross-tenant organization relationship traffic still works) |
| False | All EWS blocked |
| Any value, from Apr 1, 2027 | EWS fully and permanently disabled |
Sources: Microsoft Exchange Team Blog: Exchange Online EWS, Your Time is Almost Up · Take control of your EWSAllowedAppIDs list · Microsoft Learn: Control access to EWS in Exchange · Microsoft Learn: Deprecation of EWS in Exchange Online. Checked Oct 22, 2026. Microsoft updates these posts often and dates can change; follow the Message Center posts for your own tenant.
General guidance, not legal, tax or IT advice. This page reads only the text you paste, keeps nothing, and can't see your tenant; it can't promise any app will keep working. Make changes only under your own change control. Not affiliated with or endorsed by Microsoft. Microsoft, Exchange and Microsoft 365 are trademarks of Microsoft Corporation. EWS on on-premises Exchange is not being retired; this page is about Exchange Online.