Open THMX files

  • Full name
    Microsoft Office 2007/2010 Theme Format
  • Developer
  • Popularity
Have you encountered a problem with a THMX 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 THMX file here. In the further part of this page we have added a list of programs that should open your THMX file. It is enough you choose a proper application for your operating system, download and install it.

What is THMX file?

Files ending in THMX contain themes that are referred to as Microsoft Office themes. This new feature was introduced in 2007 (Mac 2008) by Microsoft Office.

More info

The designs include predefined styles, colors, fonts and formatting. Unlike traditional templates, THMX designs can serve as a template for documents from various applications, especially Word, Excel and PowerPoint. So it is possible to achieve a consistent look for different documents and document types.

The included themes are in the topic folder inside the Microsoft Office folder.

Own designs can be created with Word, Powerpoint or Excel. In the 'Page layout' tab under 'Designs' you can load, search and save a design.

Programs which can open a THMX file

How to open file with THMX extension?

In order to open a file with THMX extension one of the following programs must be installed on user’s system. If a problem with opening THMX 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 THMX files, follow the instructions below.
Install Microsoft Word or other program from the list

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

Set Microsoft Word as the default program for opening THMX 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 THMX 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 Microsoft Word applications is not on the list, select "Browse" option in order to manually locate the directory where Microsoft Word has been installed.


Check the section that lists most common problems with THMX files

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

  • File data is corrupted
  • THMX 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 THMX files (should that be the case, please contact your system administrator or IT specialist)
  • THMX 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)