Firefox Support Forum

Bought a new computer that was supposed to come with Windows 11, but came with Windows 10 and right to upgrade. Set up computer, downloaded Firefox, and it ran fine. after a couple of hours, ran the upgrade to Windows 11. Firefox stopped opening. uninstalled then reinstalled Firefox several times, but each time during installation get the following message (image below):

"C:\WINDOWS\SYSTEM32\MSVCP140.DLL is either not designed to run on Windows or it contains an error. Try installing the program again using the original installation media or contact your system administrator or the software vendor for support. Error status 0xc000012f."

Have tried installing with and without defaults, and refreshing instead of reinstalling.

Using Firefox. At present I am so confused. Often Firefox is not supported and I am told to use Google. I have used Firefox for many years. I like it. I feel safe on it. Now the computer world has me so confused. I am told by Vizio to sign up to get MAX which is thru Warner Bros.

I have A Fire Vizio adapter or plug in ??? on my TV. I do not understand what I am being asked to do. I find myself wanting to cry with confusion and feeling so overwhelmed with what used to be so simple. I really do not know what to do next.

I was trying to get MAX information with Vizio. I am asked to sign into my account. AACK!!!! I cannot find a VIZIO account. I go search on Passwords, computer takes me to a ROKU address with password. No VIZIO!! I want to cry. Too much of a good thing is BAD. It is a horrible feeling to be reading supposed English which might as well be Greek. Needless to state, my mind rejects all.

ive scanned my system with two different antiviruses and nothing comes up, and nothing was being downloaded before ive tried to install firefox.

ive tried to install it twice, once with my setting migrated and once all clean and they both tried to download this, is this a false positive or is the install hacked?

ive downloaded the installer from here.

I tried to change the download folder for Firefox inside "settings", and Firefox showed that the change did take, even after opening and closing the program again, but trying to download a file leaves me in the old folder again, as if Firefox didn't take what it showed it took. Also, Firefox keeps crashing when I try to download to the downloads folder. Not sure why. Clearing a few items lets me download again, but then, it will crash if I dare keep going. Is there a limit to how much can be in the downloads folder aside from the C drive itself? My C drive is showing 84GB free, in the blue, not red, so what gives?

HI all,

I'm using firefox on three different pc and i have this issue only on this one. On booting i see in the task manager about 6 background process one of them uses 80% of my cpu (an INTEL 13GEN I7 bought a few months ago...) and never ends. When these tasks are running, firefox settings tell me something like (i have it in italian) "firefox update is running on another instance". when i stop them, this message goes away too and everything seems to work fine. It shows that i am fully upgrated!

i have fully uninstalled and reinstalled firefox 4 times, nothing changes. i noticed that on older pc i had the folder "mozilla" on the programdata in the main disk while here i don't. i tried, with no result, to uninstall, copy that here and reinstall.

Pls help me, i love firefox, much better than chrome