Kinds of MM4 Files

Leading MM4 Type

.MM4

Extension:	.mm4
Class:	Microsoft Windows Word Processing Format

MM4 format was used by earlier versions of Microsoft Word, the popular world processing tool for Microsoft Windows. This format is obsolete and no longer supported.

Author:	Microsoft Corporation
Group:	Text Files
Entry:	HKEY_CLASSES_ROOT\.mm4

Software Programs That Open The Microsoft Windows Word Processing Format:

Microsoft Windows by Microsoft Corporation

Windows

Other MM4 File Associations

.MM4

Extension:	.mm4
Class:	Mortgage Minder Saved Mortgage Configuration File

Saved configuration file used by Mortgage Minder, a mortgage acceleration calculator for Microsoft Windows. This format seems to be obsolete.

Author:	CW Technical Services
Group:	Settings Files

Software Programs That Open Mortgage Minder Saved Mortgage Configuration File Files:

Mortgage Minder by CW Technical Services

Compatible with:

Windows

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Understanding MM4 Issues

Issues Opening MM4 Files

Microsoft Windows Removed

You encounter an error message such as "%%os%% Can't Open MM4 Files" when trying to open your MM4. When this happens, it is commonly due to Microsoft Windows missing in %%os%%. Your operating system cannot associate your MM4 with Microsoft Windows, so double-clicking the file won't work.

Tip: If you don't have Microsoft Windows installed, and you know of another program to open your MM4 file, you can try opening it by selecting from the programs listed under "Show Apps".

Wrong Version of Microsoft Windows is Installed

It is possible that your version of Microsoft Windows isn't able to open your Microsoft Windows Word Processing Format file due to incompatibility. Download the latest Microsoft Windows version from the Microsoft Corporation website to ensure you have the correct one installed. Most of the time your Microsoft Windows Word Processing Format file was created by a newer Microsoft Windows than what you have installed.

Tip: Sometimes you can get a clue about the version of MM4 file you have by right clicking on the file, then clicking on "Properties" (Windows) or "Get Info" (Mac OSX).

Conclusion: The majority of MM4 file opening issues are due to not having the correct Microsoft Windows version installed.

Associated Difficulties Loading MM4 Files

Assuming you have the right Microsoft Windows version installed, other problems can prevent you from opening MM4 files. There can be other issues - unrelated to software - preventing you from opening MM4 files. Additional factors include:

• MM4 file references in the Windows Registry are broken
• Corruption of the MM4 file description inside the Registry
• Microsoft Windows or another MM4 application experienced a flawed installation
• MM4 file corruption
• Malware-tainted MM4 file can't be opened
• Device drivers for MM4-related hardware are out-of-date
• Insufficient system resources to successfully open Microsoft Windows Word Processing Format files