XULRunner Error: Platform version '1.9.1.16' is not compatible with minVersion

Yesterday night while updating Firefox to latest version, my laptop battery went down and my laptop automatically turned off. Today morning when I double click on Mozilla Firefox browser, it showed an error message XULRunner Error: Platform version '1.9.1.16' is not compatible with minVersion >=1.9.1.17 maxVersion <=1.9.1.17 and failed to start Firefox. It is the first time I am seeing an XULRunner error in my life. So I searched for the same error with the numbers shown in the error message. This XULRunner error code is due to the corrupted install of Firefox browser in my laptop. The XULRunner Error message is shown below.

 XULRunner Error: Platform version 1.9.1.16 is not compatible with minVersion 1.9.1.17    maxVersion 1.9.1.17



So what is XULRunner? It is a run time environment developed by Mozilla to provide a common back-end for XUL applications designed for Firefox. Some XUL Applications are Songbird music player, Elixon WCMS/XUL etc.


How to Fix XULRunner Error

In order to fix the XMLRunner Platform version compatibility error, we need to properly uninstall currently installed Firefox and delete the Firefox folder from programs files. After removing remnants of currently installed Firefox browser from our computer, we should download and install latest version of Firefox browser.

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