Open XUL files

  • Full name
    Firefox XML User Interface Language Format
  • Developer
    Mozilla
  • Popularity
Have you encountered a problem with a XUL file? Don’t you know which program opens a file with this extension? You will find all the information you need about working with a XUL file here. In the further part of this page we have added a list of programs that should open your XUL file. It is enough you choose a proper application for your operating system, download and install it.

Programs which can open a XUL file

How to open file with XUL extension?

In order to open a file with XUL extension one of the following programs must be installed on user’s system. If a problem with opening XUL file occurred, it is highly possible that none of the listed programs is present on user’s system. Even if one or more said programs are installed, there may be issues related with given programs. In order to solve a problem with XUL files, follow the instructions below.
1
Install Mozilla Firefox or other program from the list

Most often resolving problems with opening XUL files is very simple. Just install an appropriate program that supports such files. All of the listed programs support XUL files, but may vary in offered function and purpose. Some programs may be capable only of viewing contents of XUL files or offer file conversion options, but may not be capable of editing such files.

Set Mozilla Firefox as the default program for opening XUL files

It is possible that although a compatible program has been installed on user’s system, it is not used by the system to open it. This may happen because no default application was associated with this type of files. To associate XUL files with given application, select "Open with" from drop-down menu (accessed by right-clicking on the file). Then select from the list the program or application you want to be used to open this type of file. If the Mozilla Firefox applications is not on the list, select "Browse" option in order to manually locate the directory where Mozilla Firefox has been installed.

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Check the section that lists most common problems with XUL files

Sometimes problems with opening XUL files may not lie with the application itself, but can arise due to other causes, such as:

  • File data is corrupted
  • XUL files has been not been completely download from the internet (only a part of the data has been downloaded)
  • Currently used user account hasn’t been granted necessary privileges to open XUL files (should that be the case, please contact your system administrator or IT specialist)
  • XUL file was being copied from a corrupted storage device and is incomplete or data is corrupted. (Copying files from unknown or untrusted sources should be conducted with great care as such files may contain malicious software, which can damage your system)

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