84,488,480 programs installed

Should I remove Windows Installer Clean Up?

What percent of users and experts removed it?
26% remove it74% keep it
Overall Sentiment
What do people think about it?
(click star to rate)
How common is it?
Global Rank #1,365
United States Rank #1,367
Reach 0.5028%
Lifespan of installation (until removal)
< 16.40 days
483.69 days >
Average installed length: 254.14 days


VersionDistribution 94.32% 5.26% 0.42%

Other programs by Microsoft

Windows Installer Clean Up

What is Windows Installer Clean Up?

The Windows Installer CleanUp Utility (MSICUU2.exe) was a software utility for the Microsoft Windows operating system designed to solve uninstallation problems of programs that use the Windows Installer technology. It looks up registry references and files related to Windows Installer that were installed by various programs, and forcibly wipes invalid entries out. It works in all 32-bit and 64-bit versions of Microsoft Windows. The utility will only change registry values and files associated with the Windows Installer portion on the program. For developers who have problems with the Windows Installer automatically repairing their own installations on developer machines (when the developer has manually updated some of the binaries), this utility is ideal to remove the Windows Installer information whilst leaving the actual installation intact.


The most used version is, with over 98% of all installations currently using this version. The main program executable is msicuu.exe. The software installer includes 300 files and is usually about 23.23 MB (24,360,960 bytes).

Program detailsProgram details

Installation folder: C:\Program Files\windows installer clean up
Uninstaller: MsiExec.exe /X{121634B0-2F4B-11D3-ADA3-00C04F52DD52}
(The Windows Installer is used for the installation, maintenance, and removal.)
Estimated size: 23.23 MB
Language: English (United States)

Program filesFiles installed by Windows Installer Clean Up

Program executable:msicuu.exe
Name:Windows Installer Clean Up
Windows Installer Clean Up Application
Path:C:\Program Files\windows installer clean up\msicuu.exe
Additional files:
  • msizap.exe - Windows Installer - Unicode (Windows® Installer Data Zapper)
  • aw.dll - Microsoft Office 2000 (Microsoft Office 2000 component)
  • hlp95en.dll - Microsoft Office (Microsoft Office WinHelp Utility DLL)
  • lvreg.dll
  • mso9.dll
  • mso97fx.dll - Mso97FX (Microsoft Office 97 Notes F/X DLL)
  • msohelp.exe
  • msohev.dll
  • msohtmed.exe
  • osa9.exe
  • ouactrl.ocx - Microsoft Office UA Control
  • refedit.dll - RefEdit Object 1.0
  • selfreg.dll - SelfReg (Self Registration DLL)

How do I remove Windows Installer Clean Up?

You can uninstall Windows Installer Clean Up from your computer by using the Add/Remove Program feature in the Window's Control Panel.
  1. On the Start menu (for Windows 8, right-click the screen's bottom-left corner), click Control Panel, and then, under Programs, do one of the following:
    • Windows Vista/7/8/10: Click Uninstall a Program.
    • Windows XP: Click Add or Remove Programs.
  2. When you find the program Windows Installer Clean Up, click it, and then do one of the following:
    • Windows Vista/7/8/10: Click Uninstall.
    • Windows XP: Click the Remove or Change/Remove tab (to the right of the program).
  3. Follow the prompts. A progress bar shows you how long it will take to remove Windows Installer Clean Up.

Win 7 (SP1) 53%
Win Server 2003 0%
Uninstall it 26%
Keep it 74%

Windows OS versionsWindows

Which Windows OS versions does it run on?
Windows 7 56.10%
Windows XP 19.82%
Windows 10 13.70%
Windows Vista 10.15%
Windows Server 2003 0.22%
Which OS releases does it run on?
Windows 7 Home Premium 26.46%
Microsoft Windows XP 19.60%
Windows 7 Ultimate 14.45%
Windows 7 Professional 12.24%
Windows Vista Home Premiu... 7.83%
Windows 10 Home 3.50%

Distribution by countryGeography

49.26% of installs come from the United States
Which countries install it?
  United States 49.26%
  Germany 7.48%
  United Kingdom 4.70%
  France 4.61%
  Canada 3.54%
  Italy 2.75%
  Netherlands 2.28%
  Australia 1.87%
  Brazil 1.50%
  Spain 1.36%
  Taiwan 1.08%
  Belgium 1.08%
  India 0.95%
  Russia 0.85%

OEM distributionPC manufacturers

What PC manufacturers (OEMs) have it installed?
Dell 28.97%
Hewlett-Packard 23.54%
Acer 12.06%
ASUS 6.85%
Intel 5.47%
American Megatrends 3.96%
Toshiba 3.83%
Lenovo 1.82%
Sahara 1.81%
Samsung 1.71%
Medion 0.70%
Common models
HP Pavilion dv6 Notebook ... 7.06%
HP Pavilion dv7 Notebook ... 4.36%
Dell Inspiron 530 3.34%
ASUS All Series 3.34%
Dell Inspiron 1545 2.76%
HP Pavilion g6 Notebook P... 2.31%

About Microsoft

Microsoft Corporation develops, manufactures, licenses and supports a variety of products and services related to computing.
Publisher URL: www.microsoft.com


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