HTTP2 health check fails in Data Center when configuring CDN

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This Knowledge Base article was written specifically for Atlassian Data Center applications. The contents of this article do not apply to Server installations or the Atlassian Cloud platform.


The CDN administration screen in your Data Center application displays one of the following failed warnings:

Can’t check HTTP/2 connection

This browser can’t check whether you have a HTTP/2 connection. Use a different browser to make sure you can reach your CDN over HTTP/2.

HTTP/2 required

Your network infrastructure (such as your load balancer, firewall, or proxy) must allow HTTP/2 traffic. Learn more


Your load balancer, reverse proxy, or web application firewall has not been configured to allow HTTP/2 traffic, or the browser you are using does not fully support HTTP/2, so we can't complete the check. 

While not mandatory, using HTTP/2 is highly recommended, and will provide the best performance for your end users.


You will need to update your load balancer, proxy, or firewall configuration to allow HTTP/2 traffic.  Check the documentation for your particular infrastructure to find out how to do this.  

Note: a small number of browsers, such as Internet Explorer, don't fully support HTTP/2, which means our health check won't be able to check your HTTP/2 connection. We recommend switching to another browser if you see this message. 

説明 Can't get a HTTP/2 connection warning when enabling CDN in Data Center
製品 Jira、Confluence

最終更新日 2019 年 6 月 28 日


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