User Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:42.0) Gecko/20100101 Firefox/42.0 Build ID: 20151029151421 Steps to reproduce: On December 28, 2015 I upgraded from Firefox 43.0.2 (64-bit) to Firefox 43.0.3 (64-bit). I'm running Windows 10 Pro. I downloaded a second Firefox 43.0.3 (64-bit) and re-installed, and get the same results. Actual results: The update appears to apply correctly, but I now get a message in the notification area that an update to Firefox is available, and later I get a pop-up window that tells me that I should update to Firefox 43.0.1. When I select 'About Firefox' from the 'Help' menu, it tells me that I'm running Firefox 42.0 and I should update to 43.0.1. Expected results: 'About Firefox' in the 'Help' menu should report Firefox 43.0.3, and I should not be reminded to update until the next version of Firefox is released.
> User Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:42.0) Gecko/20100101 Firefox/42.0 This is 32-bit Firefox. Please make sure you don't install 32-bit Firefox 42.
My apologies!! I have a left-over 32-bit Firefox 42.0 in my Program Files (x86) folder. The first time I installed 64-bit Firefox 43.0, I thought I observed that the 32-bit Firefox 42.0 had been uninstalled. I thought it was a clever touch that somehow the installer had updated my Quick Launch icon to point to the new 64-bit Firefox. I was wrong!! Paul H