I currently have the 64 bit version of Thunderbird and I have been running it for about a year with no problems, it has been updated to 78.9.1 . I was cleaning up some old programs and I see 2 versions of Thunderbird both appear to be 64bit 78.8.1 & 78.9.1 . My question is can I remove the older 78.8.1 version? '''Other Info:''' I am a Windows User. The 78.9.1 version is showing in C:\Program Files\Mozilla Thunderbird, but the 78.8.1 uninstaller looks to be in the 32 bit folder of C:\Program Files (x86)\mozilla thunderbird