So I’ve got some strange error recently where some users were unable to browse to some Google services such as Calendar or Gmail. They get a strange error message in their Chrome browser that says “ERR_QUIC_PROTOCOL_ERROR” after an generic text that says the page isn’t available.

After some digging, turned out that the error code is related to an experimental feature or protocol in Google Chrome that is called “QUIC (Quick UDP Internet Connection)”. The point of this is to make internet browsing a bit faster on Chrome, but sometimes it causes issues like this.


So to fix it, you simply need to disable the feature or thing.. Just follow these instructions:

  1. In Chrome browser address bar, type: chrome://flags
  2. In the flags page, find Experimental QUIC protocol
  3. Click “Disabled” from the options menu on the right side of the protocol row

Disabling the QUIC flag responsible for ERR_QUIC_PROTOCOL_ERROR error

That’s it, you should now stop getting this error “ERR_QUIC_PROTOCOL_ERROR”

Other fixes

There is a chance that this error stays even after applying the above steps. There are other things you might want to try, for example, disable extensions, or see your firewall or proxy settings..

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Disclaimer: Google Chrome and its logo is a trade mark owned by its owners which I am not. I only used Google Chrome logo for demonstration purposes and no copyrights infringement meant


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