After enabling Proxy mode of Cloudflare for an Azure App Service , we were getting the following Error in Cloudflare

What can I do?

If you’re a visitor of this website:

Please try again in a few minutes.

If you’re the owner of this website:

Contact your hosting provider letting them know your web server is not completing requests. An Error 522 means that the request was able to connect to your web server, but that the request didn’t finish. The most likely cause is that something on your server is hogging resources. Additional troubleshooting information here.

We created an Origin SSL Cert in Cloudflare and Imported into App Server and enabled Full which fixed the issue

Azure App Service and Cloudflare with Full SSL (Strict) (rmauro.dev)