Kinds of MCDX Files

Principal MCDX Type

.MCDX

File ID:	.mcdx
Category:	Mathcad Prime Document

Data file created by Mathcad, an application for Microsoft Windows used for engineering calculations. MCDX file can contain algorithms, functions, macros, symbols, plots, annotations, and other mathematical constructs.

Organization:	PTC
Function:	Data Files
Registry Key:	HKEY_CLASSES_ROOT\.mcdx

Software Programs That Open The Mathcad Prime Document:

Mathcad by PTC

Windows

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Troubleshooting Problems Opening MCDX Files

Issues Opening MCDX Files

Mathcad Isn't There

When you double-click your MCDX file, you may see a dialog box from your operating system stating that it "Cannot Open This File Type". Usually, this is because you do not have Mathcad for %%os%% installed. The typical path of opening your MCDX with a double-click won't work because %%os%% cannot make the program connection.

Tip: When you have another program installed that you know will open your MCDX, you can select it from the other programs listed (see "Show Apps").

Mathcad Requires Update

In some cases, you might have a newer (or older) version of a Mathcad Prime Document file that is unsupported by your installed application version. Download the latest Mathcad version from the PTC website to ensure you have the correct one installed. Your Mathcad Prime Document file was probably created by a newer release of Mathcad than what's currently installed your computer.

Tip: Investigate your MCDX file by right-clicking and selecting "Properties" to find clues on what version you need.

Regardless, most of the MCDX file opening problems relate to not having the right version of Mathcad installed.

Additional MCDX Opening Issues

Assuming you have the right Mathcad version installed, other problems can prevent you from opening MCDX files. There can be external issues inside of %%os%% that are causing these errors when opening MCDXs. These issues include:

• MCDX file references in the Windows Registry are broken
• Corruption of the MCDX file description inside the Registry
• Partial installation of Mathcad that did not fully complete
• The MCDX itself is corrupted
• The MCDX is infected with a virus
• Hardware related to MCDXs has device driver corruption
• Your PC doesn’t have enough available resources to open the Mathcad Prime Document file