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kb5010342 breaks Firefox 97.0 64-bit

After MickeySoft's Patch Tuesday today, I found that KB5010342 prevents Firefox from running. I'm running Win10 Pro with FF 97.0 64-bit and with this patch installed, FF… (Lesen Sie mehr)

After MickeySoft's Patch Tuesday today, I found that KB5010342 prevents Firefox from running. I'm running Win10 Pro with FF 97.0 64-bit and with this patch installed, FF opens with a blank screen and no DNS lookup or anything. Other browsers like Chrome or Edge load and work without issue. After manually uninstalling this patch, Firefox again works like it should.

Any ideas on how to fix this? Thanks.

Gefragt von gumby_dammit223 vor 2 Jahren

Beantwortet von James vor 2 Jahren

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Firefox suddenly stopped working - Windows 10 PC

Hey folks, hopefully you can help with this mysterious issue! I've been running Firefox successfully on my Windows 10 PC for a long while now. Last night, for some reaso… (Lesen Sie mehr)

Hey folks, hopefully you can help with this mysterious issue!

I've been running Firefox successfully on my Windows 10 PC for a long while now. Last night, for some reason it simply ceased to work. New windows and tabs would not load any content. I also couldn't access the Settings at all (clicking on Settings in the browser menu produces no results or feedback.)

Yesterday, I had Firefox open all day (I usually have my computer on all day), and it was working fine. Around 8 or 9pm, I first noticed that none of my open tabs were loading any content, and the tabs had the "loading" animation playing. New tabs would also not load any content. I assumed it was an internet issue as I did see my internet connection get disrupted once or twice. I did not see anything (apps, etc) on my PC updating.

This morning I found Firefox was still not loading anything, although my internet connection was fine. I tried opening Chrome, and it ran just fine. Everything else that it is internet or cloud based on my PC is running fine too. So it seems to be an issue just with Firefox.

I have listed my steps to troubleshoot below, but I want to note one weird thing I observed: Even when Firefox is closed, and Task Manager doesn't show any Firefox processes open, my PC seems to think Firefox is running. For ex. while trying to uninstall Firefox or delete certain files, I would get a warning to "close Firefox first" or "can't perform this action while app is running." After seeing these, I would again confirm that Firefox appears closed and Task Manager shows no related tasks.

My PC build: - Windows 10 Home, 64 bit - Version 20H2 at start of issue (updated to 21H2 during troubleshooting) - OS build: 19044.1526

Things I have tried for troubleshooting already: - I have WebRoot on my computer due to my job, and I asked our IT staff if they could see WebRoot blocking anything related to Firefox on their end. They said it was not. - Used "Firefox Refresh" - Uninstalled and reinstalled Firefox - Cleared app cache / app data - Updated Windows from 20H2 to 21H2


Note: This message was sent on a different computer & browser

Gefragt von Irene91 vor 2 Jahren

Beantwortet von Amelia vor 2 Jahren