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I can't able to check out the SharePoint Frameworks Web Part in my browser as it says "This site can’t provide a secure connection localhost sent an invalid response" ERR_SSL_PROTOCOL_ERROR. I have tried every possible solution for this while surfing like: Computer’s Date And Time Is Correct, Temporarily Disabled Firewall and Antivirus Software, Disable Chrome QUIC Protocol, Cleared SSL state, Changed Internet Security And Privacy Level to medium & low , Disabled Internet Browser Extensions (running in Incognito mode). Still not worked. Any Help on this will be appreciated.

enter image description here Error I got

Richendra kumar ravi
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2 Answers2

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Currently only NodeJs v6 is supported by SPFx.

Please uninstall your current Node and install v6.11.5. Also, ensure that you have installed npm version 3.

Reference - Set up your SharePoint client-side web part development environment

Gautam Sheth
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I just noticed the screenshot on you answer, it says that the Node Version is : v8.9.1

enter image description here

While working with SPFx on Node.js v8 you have to run gulp serve as:

NODE_NO_HTTP2=1 gulp serve

Try to use it. Hope it works for you.

Also refer this thread : https://github.com/SharePoint/sp-dev-docs/issues/1002

Rohit Waghela
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  • I have changed the version to 9.2.0 today's morning Rohit and got the same error. So i came to know that my problem is not the version I use, its about running it by opening the browser and display the client web part by creating a Nodebased HTTPS server at 'localhost:4321'. Any other way to overcome it? – Richendra kumar ravi Nov 27 '17 at 09:02