Mozilla fixed a bunch of bugs in Firefox 90.0.1

Mozilla released a new version of the Firefox browser. Update 90.0.1 is out with several patches and quality-of-life improvements. Here the changes.

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What's new in Firefox 90.0.1

  • Fixed a crash when using some accessibility clients on Windows.
  • Fixed busy looping processing some HTTP3 responses.
  • Fixed transient errors authenticating with some smart cards.
  • Fixed a rare crash on shutdown.
  • Fixed a race on startup that caused about:support to end up empty after an upgrade.

Apart from five bug fixes, Firefox 90.0.1 comes with a single known issue: You may get a truncated output when printing scaled web pages.


The full patch notes for Firefox 90.0.1 are available on the official Mozilla website.

In case you missed it, Mozilla shipped Firefox 90 a week ago. The latest version of a popular alternative to Chromium includes background updates for Windows. That means Firefox can install a new version even if you do not open it for several days. Background updates will help you always have the latest version of Firefox with all available patches, fixes, and new features. Besides new updating mechanisms, Firefox 90 contains some privacy improvements, security fixes, and developer-specific changes.

Firefox 90 is the first major update after the recent redesign. Firefox 89 brought a new Proton UI with some radical interface changes. The browser from Mozilla may look a bit prettier now, but a new interface has some unexpected compatibility problems in the upcoming Windows 11. For now, Firefox does not support the Snap Assist feature, which is one of the most thrilling new capabilities in Windows 11. Luckily, you can fix missing Snap Layouts in Firefox on Windows 11 using one whacky trick.

Read more about Firefox 90 here and Firefox 89 here. By the way, if you do not like how Firefox looks in the latest update, learn more about how to disable Proton UI in Firefox.

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Author: Taras Buria

Taras is here to cover stories about Microsoft and everything around, although sometimes he prefers Apple.

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