User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; de; rv:18.104.22.168) Gecko/20090715 Firefox/3.5.1 (.NET CLR 3.5.30729) Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; de; rv:22.214.171.124) Gecko/20090715 Firefox/3.5.1 (.NET CLR 3.5.30729) Version 3.5.1 of Firefox is in use. The update to 3.5.2 has been detected and downloaded automatically. When restarting Firefox, the update process is started but fails with the message that the update could not be performed. Reproducible: Always Steps to Reproduce: 1. Start Firefox 3.5.1 with auto-update enabled. 2. The update to 3.5.2 is downloaded. After pressing the confirmation button, Firefox restarts in order to install the update. Actual Results: The update process starts but fails. Restarting Firefox starts 3.5.1. Expected Results: Version 3.5.2 should have been started.
8 years ago
There should be a file named last-update.log in your updates directory which is typically located in your installation directory. Please attach it to this bug report
Chances are there are files in use which makes this a duplicate of bug 466778. As a workaround the installer should work if you are unable to get update to work.
When using the latest installer from mozilla.com, the update to 3.5.2 is applied successfully.
Behavior occured again with the update from Firefox 3.5.3 to 3.5.4.
whenever i tried to update 3.5.5 to 3.5.6. it downloaded properly, but wen firefox restart for updating. it says "cannot install, any other instance of firefox is running." i closed all firefox related services, eeven restart laptop. but it did not work. At last, i set iNTERNET eXPLORER as my default browser, and again start firefox. it took update without any issue. :)
That sounds like you have another app that is keeping the default browser in use which will prevent applying an update