Are Sharepoint Remote Event Receivers still going to be usable/available after the Sharepoint Add-In retirement?

Question

Hello,

We were recently looking at using Remote Event Receivers to get events from a Sharepoint Tenant and found the warning messages around the Add-Ins being retired, and also the learning document about it (https://learn.microsoft.com/en-gb/sharepoint/dev/sp-add-ins/retirement-announcement-for-add-ins)

I know that various aspects are going to be retired, but will we still be able to create and use Remote Event Receivers? We were hoping to be able to create RER's on user's Tenants using CSOM, and then sending the requests back to our system to deal with. Will this still be possible? Or is everything going in 2026 and we will just need to use the new Webhooks instead?

As a second question to this, will we be able to use the Azure based authentication (I believe ADD should be able to work?) instead of ACS for our authentication if RERs aren't being fully retired? Since ACS is being retired and we wanted to use RER's, we were wondering if ADD would be a viable second option

Thanks,

Charlie

Answer 1

Hi @Charlie Lancaster,

Per my research, we are able to create Remote Event Receivers using CSOM currently. But considering future updates, I would recommend you to transform SharePoint Add-in model Remote Event Receivers to SharePoint Online Webhooks. Please refer to the following document

https://learn.microsoft.com/en-us/sharepoint/dev/sp-add-ins-modernize/from-remote-event-receivers-to-webhooks

For your second question, remote event receiver registered via an Azure AD app will be unable to trigger the endpoint because the Azure AD app doesn’t have any local identity at the SharePoint level.

---

If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".

Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.