The remix browser was working before. I was getting "Origin http://localhost is not allowed by Access-Control-Allow-Origin.". SO, I added Allow-Control-Allow-Origin: * Chrome Extension. But the remix stopped working then. Not sure, if this is related.

I have now, removed the extension and cleared the application storage. Still the issue persists.

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  • Might be something wrong with remix cause I'm getting the same error. It's about the compiler, I think.
    – vhie
    Nov 14, 2018 at 4:06
  • Yes looks like!
    – Santoshini
    Nov 14, 2018 at 6:16

1 Answer 1


Select the appropriate compiler version and try again.


If you're using -

    pragma solidity ^0.4.17;

then use the following compiler version -


Hope this helps someone!

  • Thanks a lot! This was the issue. Now, I am able to proceed with the correct compiler.
    – Santoshini
    Nov 15, 2018 at 17:53

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