Firefox Support Forum

I am having issues with activation of an existing O365 subscription. After hours working with Microsoft Office support the issue is still not resolved.

That is seemingly unrelated to Firefox, yet when trying to resolve the issue I uninstalled O365 twice, I could not open Firefox. I received the error "VCRUNTIME140_1.dll was not found". After reinstalling O365, I was able to access Firefox but all of my bookmark folders are gone.

How do I recover those bookmark folders (with hundreds of bookmarks--if they're permanently gone, it will be a significant loss). AND why would uninstalling O365 affect Firefox?

when i try to reinstall firefox 88.xx i get error that vcruntime140_.dll is running or something, and install will not finish.l HELP

natalie

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About a month ago, Firefox stopped loading web pages on my Windows 10 Lenovo Flex 14-IWL computer. The UI loads without any issues. However, no pages can be loaded, including Firefox's own pages like "about:preferences" or "about:performance." I completely removed all traces of Firefox from the computer twice (using Revo Uninstaller's advanced mode), but the problem remained after each reinstallation attempt. On the second of those reinstall attempts, I checked the Console after trying to load one of those control pages and found the error messages shown in the attached screenshot. What is happening, and how can I get Firefox working again?

(Note: Since I have completely uninstalled Firefox again since taking this screenshot, there is no troubleshooting data to send.)

Widows 11...firefox not working... uninstalled and tried to re-install.. the install terminates prematurely with the message: The code execution cannot proceed because VCRUNTIME140_1.dll was not found......

Help!

Firefox stopped working all of a sudden and I get this message: VCRUNTIME140_dll not found I've tried loading and reloading and re-installing and switching computer on and off and trying again and all I get is this message: VCRUNTIME140_dll not found I think it could be a hacker, but how do I get Firefox back up and running?

Good morning.

If I try to delete Mozilla VPN from my pc, using Programs and Features in Windows 10, it will make Firefox unable to operate. The question is, how to delete the vpn from computer without causing Firefox to crash.

Thank you.