graph api subscription always get validationToken

Question

i create a subscription for teams presences, it works well for a long time.

today, i found the code can not get the users presences, it always got the validationToken.

if (!string.IsNullOrEmpty(validationToken))
{
    var token = Request.Query["validationToken"];
    return Content(token, "text/plain");
}

Answer 1

Hi @Baoxin BX6 Li

Please check whether the subscription has expired. If you need to renew or re-subscribe, please check the document for the validity of the subscription.

https://learn.microsoft.com/en-us/graph/api/resources/subscription?view=graph-rest-1.0#subscription-lifetime

Hope this helps.

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Answer 2

We're in the same situation. Our service has been using presence subscription successfully for several years, but on Saturday evening (European time) the event stream of actual presence changes suddenly stopped.

We still get these validation requests on subscription renewal.
I've confirmed that the subscriptions are created successfully. We run another app on our lab environment, and that also stopped at the same time.

I suspect there might be something wrong with this service.