You're here because you have a file that has a file extension ending in .dir. Files with the file extension .dir can only be launched by certain applications. It's possible that .dir files are data files rather than documents or media, which means they're not meant to be viewed at all.

Digital motion graphics, animated sequences and movie projects authored with the Macromedia Director software are also known as Adobe Director movie files, and these are digital video files stored in the DIR format. In 2005, Adobe Systems purchased Macromedia, so version 11.5 and later of the Adobe Director software now use the DIR file format, and files affixed with the .dir extension can only be created and opened or edited using the Adobe Director 11.5 software and later versions of this application. The content of these DIR files may include URLs of files stored in external storage devices which need to be referenced by the Adobe Director 11.5++ software when a user accesses associated functionalities implemented into this program when viewing the corresponding DIR files. Scripting code and project resources may also be included as the content of these DIR files by its creators. Timeline configurations and settings are also entered in these DIR movie files, since these define video playback. The Adobe Shockwave Player software can also be used to open and view the digital animated movie content of these DIR project files. The Adobe Director 11.5 software has a version for Mac platforms, while another version is intended for computers running on Microsoft Windows-based systems. Users of these operating systems can also use the Adobe Shockwave Player program to play a DIR movie. Most Web browsers developed for Microsoft Windows-based systems are also integrated with support for opening and playing the video content of a DIR file through the functionalities of the Adobe Shockwave Player program embedded into these Web browsers.

Launch a .dir file, or any other file on your PC, by double-clicking it. If your file associations are set up correctly, the application that's meant to open your .dir file will open it. It's possible you may need to download or purchase the correct application. It's also possible that you have the correct application on your PC, but .dir files aren't yet associated with it. In this case, when you try to open a .dir file, you can tell Windows which application is the correct one for that file. From then on, opening a  .dir file will open the correct application. Click here to fix .dir file association errors

Be careful not to rename the extension on .dir files, or any other files. This will not change the file type. Only special conversion software can change a file from one file type to another.

A file extension is the set of three or four characters at the end of a filename; in this case, .dir. File extensions tell you what type of file it is, and tell Windows what programs can open it. Windows often associates a default program to each file extension, so that when you double-click the file, the program launches automatically. When that program is no longer on your PC, you can sometimes get an error when you try to open the associated file.