User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:53.0) Gecko/20100101 Firefox/53.0 Build ID: 20170518000419 Steps to reproduce: It happens sometimes so there is not 100% reproduce steps. It happen to me multiple times but I think it can happen in one of two scenarios: 1. When openned a new tab and start typing an url 2. When try to click on "browse" on form to attach a file Additional information which maybe will help you debug a problem: 1. OS: Windows 7 2. Browser: Forefox 53.0.3 (32 bits) - it never happens earlier 3. CPU: Intel i7-4770K (not overclocked) 4. RAM: 32 GB (not overclocked) 5. Using Norton Security 6. Installed extensions: - Adblock Plus - Awesome screenshot - Firebug - Fireshot - Ghostery - Google Translator - JSONView - RESTClient - Selenium IDE - User Agent Switcher - Web Developer 7. Installed plugins: - OpenH264 Video Codec (always active) - Widevine Content Decryption Module (always active) - Shockwave Flash (ask for activation) - using very rare 8. Active services: none 9. Theme: default If you need anything other information let me know please Actual results: Firefox freeze and 3-4 seconds later whole system freeze. Only way to get out from this freeze is turn off computer. Expected results: It should not freeze
Hi Sc0rp, I tested this issue on Windows 7 x32 with FF release 53.0.3 and I can't reproduce this issue. I installed all the mentioned extensions one by one and every time I verified the functionality of the browser. I didn't manage to freeze the browser. 1. Please try to test again the browser and see if you are able to reproduce this in safe mode: here is a link that can help you: https://support.mozilla.org/t5/Procedures-to-diagnose-and-fix/Troubleshoot-Firefox-issues-using-Safe-Mode/ta-p/1687#w_how-to-start-firefox-in-safe-mode 2. If you still have the issue please create a new profile, you have the steps here:https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles?redirectlocale=en-US&redirectslug=Managing-profiles#w_starting-the-profile-manager 3. This week we will have a new release FF 54.0 and it will be a good idea to verify this problem using the latest version. Thank you for reporting this and for your time. There might be one more scenario where we can verify this issue: Please download Firefox Nightly from here: https://nightly.mozilla.org/ and retest the problem.
Based on the lack of information from ScOrp, I'll close this as resolved: incomplete. Please feel free to reopen it when you have news about this issue. Thanks