Open MPN File
The MPN file extension primarily denotes MultiPlan files, a type of spreadsheet program developed by Microsoft in the early 1980s. This program is now largely obsolete but these files might still be encountered with older systems. There are also a few other types of software and systems which utilize the MPN file type, though these are far less common usage categories.
MPN as MultiPlan Files
The main use of the MPN file type is for MultiPlan documents. MultiPlan was an early spreadsheet program developed by Microsoft before the release of Microsoft Excel. The MPN file format contains spreadsheet data just like Excel, but was used in an era when personal computers ran on a CP/M operating system, before the advent of DOS.
To open MPN files which are MultiPlan documents, a vintage computer emulator like the open source Hercules IBM Mainframe Emulator might be necessary. Another way to open these could be to convert them to a more recent spreadsheet format using a file conversion service, though this will not produce perfect results in all cases.
MPN as Other File Types
Less commonly, the MPN file type might be used in connection with a few other pieces of software or systems.
Some other applications which might use the MPN format include MediaPort and Mrcio Coelho's AutoPlay. In many of these cases, the MPN file type will probably be proprietary to the specific software, so they'd ideally be opened with their respective software. It's also possible that specialized file conversion services could convert these MPN files to a different more accessible format.
MPN File Important Information
The MPN file format has become largely obsolete and is used primarily in relation to outdated or niche software. If you're not working with such legacy or specialized systems, it's unlikely that you would encounter this type of file often.
If you do encounter an MPN file, it's important that you identify the correct software that was designed to open it. If you're unsure, consider seeking specialist advise rather than trying to open it with different software haphazardly. Not only will incorrect software fail to open the file correctly, but some software might also cause damage to the file. Remember, proprietary file types often require the exact software that created them to open them successfully.