Mozilla releases Firefox 40.0.2 update to fix issues in the browser

Firefox 40 was released on Tuesday and the release of an update shortly afterwards is usually a good indicator that something went terribly wrong and needs fixing immediately.

The organization published release notes for Firefox 40.0.1 shortly after release of Firefox 40 to the stable channel. It pulled the release notes shortly thereafter again, and published release notes for Firefox 40.0.2 instead.

If you run Firefox Stable, you are probably wondering about those updates.

According to the release notes, they fix two issues in Firefox and add one new feature to it at the same time:

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  1. A startup crash issue was fixed that happened under certain conditions. It affects only Windows systems Firefox is running on, and was first reported in April 2015. Consult Bug 1160295 for further information about the issue.
  2. The component mozalloc.lib is missing in 32-bit versions of Firefox for Windows. Again a bug that is only affecting Windows versions of Firefox, or more precisely the SDK. Consult Bug 1168291 for additional information.


The new “feature” fixes an issue on Windows 10 where a click on the “let’s do it” button to set Firefox as the default browser on Windows 10 lead to a Windows message instead of opening the default settings app which users have to use to set Firefox as the default browser.

If you are running Firefox 40 Stable you may want to check for updates right away to download and install those.

While you may not be affected by the issues directly, it is usually better to run the latest version of the browser.

To check for updates manually, tap on the Alt-key on your keyboard and select Help > About Firefox from the menu that opens up at the top of the browser interface.

Firefox runs a manual check for updates. If it finds any, it will download and install the latest provided that you have not modified the update settings of the browser.

A restart is required to complete the process.

Now You: Have you noticed issues in the latest version of Firefox?


Article Name

Mozilla releases Firefox 40.x updates to fix issues in the browser


Martin Brinkmann


Mozilla released Firefox 40.0.2 days after it released Firefox 40 to fix several issues in the web browser.

About Martin Brinkmann

Martin Brinkmann is a journalist from Germany who founded Ghacks Technology News Back in 2005. He is passionate about all things tech and knows the Internet and computers like the back of his hand. You can follow Martin on Facebook, Twitter or Google+

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