Firefox – Update could not be installed. Make sure no copies of Firefox running
Yesterday, checked for updates in Firefox. I got a message that new updates are available and downloaded the same. But after downloading I noticed that the updates refused to install.
I tried numerous times but ended in restarting Firefox all the time. Its kind of deadlock situation wherein when I tried to install the updates from within Firefox (Menu option Help—>apply downloaded updates), it asked to restart the browser. On restarting Firefox, I got a message that updates couldn’t be installed.
Every time I restarted Firefox to install the update, I was presented with a following nice message
Things which I tried.
Well, anyone would try these 
1) I checked Task Manager to see if any session of Firefox is still running. As expected, didn’t find any.
2) Restarted my laptop but in vain.
The solution
Then I found the answer in Mozilla support. Its quite simple. Just run Firefox as administrator in Vista by right clicking the shortcut—>Run as administrator. It worked and the updates were installed successfully.
I am not sure if this method is going to work for all operating systems but it worked for Vista.
Please share your thoughts through comments.
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