Files with msp extension can mainly be found as patch files for Windows Installer service. These files are usually part of updates.

There are 5 other file types using
the MSP file extension!

msp icon.msp - Microsoft Paint bitmap picture

empty icon.msp - Magix Music Studio data

empty icon.msp - Technics Sx-KN5000/6000 keyboard manual sequence pads

empty icon.msp - Max Script Page

empty icon.msp - ClarisWorks dictionary

MSP file extension - Windows Installer patch

What is msp file? How to open msp files?

The msp file extension is associated with the Microsoft Windows Installer, an application installation and configuration service.

The msp files are used to update the Windows operating system and other Microsoft programs. Typically included with security updates or Microsoft hotfixes.

The Windows Installer Cache, located in c:\windows\installer folder, is used to store important files for applications installed using the Windows Installer technology.

This directory also contains various other data, however you do not delete these files.

The default software associated to open msp file:

Windows Installer icon

Microsoft Corporation logoWindows Installer  Microsoft Windows software

Company or developer:
Microsoft Corporation

Microsoft Windows Installer is installation and configuration service included in the Microsoft Windows 2000, XP, Vista, 7 as well as Windows Server family. Windows Installer provides standard format for Windows component management.

Microsoft Windows icon

Microsoft Corporation logoMicrosoft Windows  Microsoft Windows software

Company or developer:
Microsoft Corporation

A family of operating systems developed by the Microsoft Corp. The first Windows was released in 1985 as a GUI add-on to MS-DOS. MS-DOS based Windows versions were developed to 2000, when was released the last version called Windows ME. Windows based on NT core started in 1993. Windows NT family are developed to these days, the latest version is called Microsoft Windows 11.

Help how to open:

Used for internal purposes of Windows Installer.

How to convert:

There is no way how to convert msp files to other file format.

List of recommended software applications associated to the .msp file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open msp file, edit msp file, convert msp file, view msp file, play msp file etc. (if exist software for corresponding action in's database).

Unspecified and all other actions for computer programs working with msp file - Windows Installer patch

Click on the software link for more information about Windows Installer. Windows Installer uses msp file type for its internal purposes and/or also by different way than common edit or open file actions (eg. to install/execute/support an application itself, to store application or user data, configure program etc.).

Microsoft Windows:

Main software associated with msp file by default:
Windows Installer small icon Windows Installer
Microsoft Windows small icon Microsoft Windows

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