Merge pull request #272533 from MicrosoftDocs/repo_sync_working_branch

Confirm merge from repo_sync_working_branch to main to sync with https://github.com/MicrosoftDocs/azure-docs (branch main)

Author: Saisang

articles/event-grid/webhook-event-delivery.md

@@ -26,9 +26,9 @@ If you're using any other type of endpoint, such as an HTTP trigger based Azure
 
    Event Grid supports a manual validation handshake. If you're creating an event subscription with an SDK or tool that uses API version 2018-05-01-preview or later, Event Grid sends a `validationUrl` property in the data portion of the subscription validation event. To complete the handshake, find that URL in the event data and do a GET request to it. You can use either a REST client or your web browser.
 
-   The provided URL is valid for **5 minutes**. During that time, the provisioning state of the event subscription is `AwaitingManualAction`. If you don't complete the manual validation within 5 minutes, the provisioning state is set to `Failed`. You have to create the event subscription again before starting the manual validation.
+   The provided URL is valid for **10 minutes**. During that time, the provisioning state of the event subscription is `AwaitingManualAction`. If you don't complete the manual validation within 10 minutes, the provisioning state is set to `Failed`. You have to create the event subscription again before starting the manual validation.
 
-   This authentication mechanism also requires the webhook endpoint to return an HTTP status code of 200 so that it knows that the POST for the validation event was accepted before it can be put in the manual validation mode. In other words, if the endpoint returns 200 but doesn't return back a validation response synchronously, the mode is transitioned to the manual validation mode. If there's a GET on the validation URL within 5 minutes, the validation handshake is considered to be successful.
+   This authentication mechanism also requires the webhook endpoint to return an HTTP status code of 200 so that it knows that the POST for the validation event was accepted before it can be put in the manual validation mode. In other words, if the endpoint returns 200 but doesn't return back a validation response synchronously, the mode is transitioned to the manual validation mode. If there's a GET on the validation URL within 10 minutes, the validation handshake is considered to be successful.
 
 > [!NOTE]
 > Using self-signed certificates for validation isn't supported. Use a signed certificate from a commercial certificate authority (CA) instead.