Unhandled Rejection (SecurityError): The operation is insecure. On a fresh create-react-app project

user_10594994 0
Viewed 15901
reactjs firefox
5 Answers

This problem seems to only happen in Firefox. Edge worked fine.

After creating the project, in index.js change:

serviceWorker.register();
//serviceWorker.unregister();

Still trying to figure whose fault this is, but this should get you going.

user_11055620

Another solution found in the link in the answer by Niraj Niroula:

If you want to keep the Delete cookies and site data when Firefox is closed option enabled, click on the Manage Exceptions button and add localhost (with the protocol and port) to the exceptions list:

cookie and site data deletion exceptions

user_111382670

Seems that the issue exists only in Firefox. Anyone still bugged by this bug can try disabling Delete cookies and site data when Firefox is closed option in Privacy and Security settings. enter image description here Or try wrapping the navigator.serviceWorker usages inside a try/catch. In my case

  if ("serviceWorker" in navigator) {
    navigator.serviceWorker.ready
      .then(registration => {
        registration.unregister();
      })
      .catch(error => console.log("ServiceWorker Warning: ", error));
  }

For related discussion and more info

user_43879750

A lot of answers here do actually solve the issue but the simplest way I have found is to add npm package serve to your dependencies.

yarn add serve or npm i serve

and then replace your start script with the following:

"scripts": {
    "start": "serve -s build",
}

This is actually straight out of the create-react-app docs

user_105087530

I had this error occur as well. Was able to clear it up by deleting the create-react-app serviceWorker.js file

user_119580600
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