How to Install DivX Webplayer in Firefox Portable

Certain web-based video tutorials, etc. may require having the DivX Webplayer installed; usually this is an easy-to-solve problem -- just install the DivX plug-in. However, as I wrote about in my post regarding installing Adobe Flash Player in Firefox Portable, if you don't have an installed version of Firefox, just installing a particular plug-in, in this case DivX, on your computer won't solve the problem.

What you need to do to get DivX in Firefox Portable is to copy three key files to the folder for Firefox Portable's plugins. To do so, follow these steps:

If You Already Have DivX Plus on Your Computer

1. Close Firefox Portable if it's open.
2. Copy the files npdivx32.dll, npdivx32.tlb, and npdivx32.xpt from C:\Program Files\DivX\DivX Web Player to ..\FirefoxPortable\Data\plugin
3. Start Firefox Portable and test.

If You Don't Have Divx Plus On Your Computer

1. Download DivX Plus.
2. Close Firefox Portable.
3. Either install DivX Plus or extract the contents of the installer.  To extract the contents,  download the portable app called Universal Extractor by going to this FAQ page at The Portable Freeware Collection, reading the very first FAQ on that page regarding extracting files from an installer, and following the directions contained therein.
4. Copy the files npdivx32.dll, npdivx32.tlb, and npdivx32.xpt from C:\Program Files\DivX\DivX Web Player if you installed DivX, or, if you extracted the installer's contents, from ..\DivX\DivX Web Player to ..\FirefoxPortable\Data\plugin
5. Start Firefox Portable and test.