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I have created sample express js hello world application listening on port 3000. When application accessed using URL http//localhost:3000/ application run properly. But if accessed using machine name , http://fullmachinename:3000/ , getting HTTP 426 upgrade required response

Amit Gaikwad
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  • Some info here: [Is HTTP status code 426 Upgrade Required only meant signal an upgrade to a secure channel is required?](http://stackoverflow.com/questions/17873247/is-http-status-code-426-upgrade-required-only-meant-signal-an-upgrade-to-a-secur) and [426 UPGRADE REQUIRED](https://httpstatuses.com/426) – jfriend00 Mar 07 '17 at 05:33

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Port is being used or blocked, switch to another port and try again.

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