Why did firefox download the 32 bit version

One is in folder Mozilla Firefox, the other in folder Program Files x Can one be removed? If you prefer to keep using the bit version that you probably installed at some later point, you can safely remove the bit version that shows x86 in that dialog.

In any case, do not "uninstall" just by removing the content of the folders you mentioned. Best choice is always to use the dialog mentioned. In that case, you could choose to remove the one from the Program Files x86 folder instead.

To see if you have a bit Windows version visit this Microsoft help page. When you switch to the bit version of Firefox, your Firefox user data passwords, bookmarks, settings, add-ons , etc. Grow and share your expertise with others. Answer questions and improve our knowledge base. This file has been scanned with VirusTotal using more than 70 different antivirus software products and no threats have been detected. It's very likely that this software is clean and safe for use.

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