Sorts of X Files

Primary X File Association

.X

Extension:	.x
Type:	DirectX Model File

The X file is a 3D image file used by DirectX technology.The X file may contain specifications for meshes, textures, animations, and objects.The X file can be exported using the DirectX SDK plugins for 3ds Max and Maya, or with custom exporters for programs such as Blender and DeleD.

Organization:	Microsoft Corporation
Division:	3D Image Files
Folder:	HKEY_CLASSES_ROOT\.x

Software Programs That Open The DirectX Model File:

Microsoft DirectX SDK by Microsoft Corporation

Windows

Additional X Files

.X

Extension:	.x
Type:	Lex Source Code File

The X file is also a source code written in the Lex programming language.Lex programming language is a standard lexical analyzer for Unix.The X file may be processed with the lex utility included with most Unix distributions to generate a C program.The X file output is often written to a file named "lex.yy.c.".

Organization:	Microsoft Corporation
Division:	Developer Files

Software Programs That Open Lex Source Code File Files:

Microsoft Visual Studio by Microsoft Corporation

Compatible with:

Windows

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Sources of X Problems

Common Problems Opening X Files

Microsoft DirectX SDK is Not Installed

When you double-click your X file, you may see a dialog box from your operating system stating that it "Cannot Open This File Type". Customarily, this means that Microsoft DirectX SDK is not installed on %%os%%. The OS won't know what to do with your X file, so double-clicking to load the file doesn't work.

Tip: If you have another software that you know opens X files, you can select it by hitting the "Show Apps" button.

Microsoft DirectX SDK is Out-of-Date

In other instances, your DirectX Model File file version may not be supported by your version of Microsoft DirectX SDK. If you've got the wrong version of Microsoft DirectX SDK installed, you'll need to install the correct version. This issue mainly occurs when your DirectX Model File file was created by a newer version of Microsoft DirectX SDK than you have on your PC.

Tip: Sometimes you can get a clue about the version of X file you have by right clicking on the file, then clicking on "Properties" (Windows) or "Get Info" (Mac OSX).

Summary: Not having the right Microsoft DirectX SDK version on your computer can cause problems opening X files.

Associated Difficulties Loading X Files

You can still experience errors opening X files even with the latest version of Microsoft DirectX SDK installed on your PC. There can be external issues inside of %%os%% that are causing these errors when opening Xs. Issues that aren't software-related:

• Windows Registry X file paths that are incorrect
• Deletion of the X file description from the Registry by mistake
• Microsoft DirectX SDK or another X application experienced a flawed installation
• Something has caused file corruption of your X
• The X is infected with a virus
• Drivers associated with X software need to be updated
• Windows has inadequate resources to open your DirectX Model File file