Please attach the output of `about:support` too. To set an environment variable for a specific Firefox instance: 1. Right- 1. Open a text editor such as Notepad. 2. Copy paste the following content (assuming a default Firefox installation; change if needed) ``` SET MOZ_PROFILER_STARTUP=1 "C:\Program Files\Mozilla Firefox\firefox.exe" ``` 3. Save the above as `debug_firefox_startup.bat` (make sure that the file extension is .bat and not a .txt file!) 4. Quit all existing Firefox programs. 5. Double-click on the bat file to launch Firefox.
Bug 1904165 Comment 4 Edit History
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Please attach the output of `about:support` too. To set an environment variable for a specific Firefox instance: 1. Open a text editor such as Notepad. 2. Copy paste the following content (assuming a default Firefox installation; change if needed) ``` SET MOZ_PROFILER_STARTUP=1 "C:\Program Files\Mozilla Firefox\firefox.exe" ``` 3. Save the above as `debug_firefox_startup.bat` (make sure that the file extension is .bat and not a .txt file!) 4. Quit all existing Firefox programs. 5. Double-click on the bat file to launch Firefox.