Here's a quick fix to the Jenkins GitHub Webhook 403 error: HTTP ERROR 403 No valid crumb was included in the request. Basically, if you his this Jenkins GitHub 403 error, you're likely trying to configure a GitHub webhook with the remote Jenkins URL and not through the Jenkins GitHub plugin. In this example, I'll show you how a 403 no valid crumb in the request error is causes, and also how to properly integrate Jenkins and GitHub webhooks so you don't encounter this 403 error in the future.