**[Notes]:** - This issue is reproducible only on windows. **[Affected versions]:** - Firefox Release - Build ID: 20220106144528 - Firefox Beta - Build ID: 20220111185943 - Firefox Nightly - Build ID: 20220112213002 **[Affected Platforms]:** - Windows 10 x64 (Version 21H1 - 19043.1466) - Windows 10 x64 (Version 21H1 - 19043.1415) - Windows 10 x64 (Version 20H2 - 19042.1466) **[Prerequisites]:** - Have a previous version of Firefox Nightly installed. **[Steps to reproduce]:** 1. Open the browser from the prerequisites and update it. 2. Navigate to any website (e.g. https://www.wikipedia.org/) and observe the behavior. **[Expected result]:** - The website is successfully opened. **[Actual result]:** - The website is not open. **[Notes]:** - If a new update check is performed will be stuck in "Checking for updates..." and eventually will crash. - This issue is reproducible after a browser restart. - This issue is not reproducible with a new Firefox profile. - Attached a screen recording of the issue.
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**[Affected versions]:** - Firefox Release - Build ID: 20220106144528 - Firefox Beta - Build ID: 20220111185943 - Firefox Nightly - Build ID: 20220112213002 **[Affected Platforms]:** - Windows 10 x64 (Version 21H1 - 19043.1466) - Windows 10 x64 (Version 21H1 - 19043.1415) - Windows 10 x64 (Version 20H2 - 19042.1466) - macOS 11.6 - Ubuntu 20.04 **[Prerequisites]:** - Have a previous version of Firefox Nightly installed. **[Steps to reproduce]:** 1. Open the browser from the prerequisites and update it. 2. Navigate to any website (e.g. https://www.wikipedia.org/) and observe the behavior. **[Expected result]:** - The website is successfully opened. **[Actual result]:** - The website is not open. **[Notes]:** - If a new update check is performed will be stuck in "Checking for updates..." and eventually will crash. - This issue is reproducible after a browser restart. - This issue is not reproducible with a new Firefox profile. - Attached a screen recording of the issue.