Firefox doesn't close completely and still runs in background
For a few days now, Firefox has been acting strangely on a whole new scale for me. Starting from the day it was acting up, Firefox had crashed upon closing down. When it had closed/or crashed, the process for it: "firefox.exe", was still running in the background using almost unnoticeable memory (usually around 130 to 250k of memory).
Ever since then, whenever I push the power button to start up Windows, firefox.exe would start up with it as if it was a startup service and because of that, it was nigh impossible to close it even if I had restarted Windows.
I have already used some methods to solve this:
- Trying to end process using Task Manager. - Restarting the computer, which didn't work as firefox.exe starts up as well. - Trying to delete parent.lock (Which in this state, it will NOT delete prior that firefox.exe was still running) - Making sure the "Read-only" tag is unchecked on the profile (This failed each time it is unchecked when applied.)
So for now, I've made use with Edge for the time being until then
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Use "3-bar" menu button > Exit (Power button) (Windows: File > Exit; Mac: Firefox > Quit Firefox; Linux: File > Quit) to close Firefox if you are currently doing that by clicking the close X on the Firefox title bar.
In case you use "Clear history when Firefox closes", try to disable this feature.
- Tools > Options > Privacy > Firefox will: "Use custom settings for history": [X] "Clear history when Firefox closes" > Settings
- https://support.mozilla.org/kb/remove-recent-browsing-search-and-download-history
- Clearing "Site Preferences" clears all exceptions for cookies, images, pop-up windows, software installation, passwords, and other website specific data.
- Clearing Cookies causes Firefox to start plugin-container processes to clear cookies created by plugins