3DMDEF file format description
Many people share .3dmdef files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .3dmdef file can be edited, converted or printed with. On this page, we try to provide assistance for handling .3dmdef files.
1 filename extension(s) found in our database.
.3dmdef - 3DMark Definitions Data
The 3DMDEF data files are related to 3D Mark. The 3DMDEF file is a 3DMark Definitions Data. 3DMark is a benchmark designed to measure the performance of computer hardware.
- 3D Mark
- Data files
- - / -
- 3DMark Definitions Data related extensions:
Naturally, other applications may also use the .3dmdef file extension. Even harmful programs can create .3dmdef files. Be especially cautious with .3dmdef files coming from an unknown source!
Can't open a .3dmdef file?
When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:
Windows can't open this file:
To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.
To avoid this error, you need to set the file association correctly.
- Open Control Panel > Control Panel Home > Default Programs > Set Associations.
- Select a file type in the list and click Change Program.
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