What is cleanmgr.exe?

The .exe extension on a filename indicates an executable file. Executable files may, in some cases, harm your computer. Therefore, please read below to decide for yourself whether the cleanmgr.exe on your computer is a Trojan that you should remove, or whether it is a file belonging to the Windows operating system or to a trusted application.

Click to Run a Free Scan for cleanmgr.exe related errors

Cleanmgr.exe file information

Windows Task Manager with cleanmgr
Cleanmgr.exe process in Windows Task Manager

The process known as Disk Space Cleanup Manager for Windows belongs to software Microsoft Windows Operating System by Microsoft (

Description: The original cleanmgr.exe from Microsoft is an important part of Windows, but often causes problems. The file cleanmgr.exe is located in the C:\Windows\System32 folder. Known file sizes on Windows 10/8/7/XP are 212,480 bytes (50% of all occurrences), 65,536 bytes or 210,944 bytes. 
The cleanmgr.exe file is a Windows system file. It is a trustworthy file from Microsoft. The program has a visible window. Therefore the technical security rating is 0% dangerous, however you should also read the user reviews.

Recommended: Identify cleanmgr.exe related errors

Viruses with the same file name

Is cleanmgr.exe a virus? No, it is not. The true cleanmgr.exe file is a safe Microsoft Windows system process, called "Disk Space Cleanup Manager". However, writers of malware programs, such as viruses, worms, and Trojans deliberately give their processes the same file name to escape detection. Viruses with the same file name are such as VirTool:Win32/VBInject.gen!DM (detected by Microsoft), and Trojan.Gen (detected by Symantec).
To ensure that no rogue cleanmgr.exe is running on your PC, click here to run a Free Malware Scan.

How to recognize suspicious variants? If cleanmgr.exe is located in a subfolder of the user's profile folder, the security rating is 66% dangerous. The file size is 13,179,660 bytes (66% of all occurrences) or 884,736 bytes. The program has no visible window. The software starts when Windows starts (see Registry key: Run, MACHINE\Run). The application uses ports to connect to or from a LAN or the Internet. Cleanmgr.exe is not a Windows system file. Cleanmgr.exe is able to monitor applications, record keyboard and mouse inputs and manipulate other programs.

Important: Some malware disguises itself as cleanmgr.exe, particularly when not located in the C:\Windows\System32 folder. Therefore, you should check the cleanmgr.exe process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.


User Comments

windows xp harddisk cleaner
Windows file that is using all my CPU
  Ankur Sethi  
Automating Disk Cleanup Tool in Windows
  William   (further information)
Found in %windir%\system32\cleanmgr.exe
Suddenly using +90% of my CPU This was all very helpful though, I feel safe ending the process now.
  Seaberry   (further information)
cleanmgr.exe is the process for Disk Cleanup. cleanmgr.exe uses about 50% or more of my CPU when it is calculating the amount of disk space that can be recovered and when it is recovering disk space.

Rating chart

Summary: Average user rating of cleanmgr.exe: based on 8 votes with 6 user comments. 4 users think cleanmgr.exe is essential for Windows or an installed application. 3 users think it's neither essential nor dangerous. One user suspects danger.

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Best practices for resolving cleanmgr issues

A clean and tidy computer is the key requirement for avoiding problems with cleanmgr. This means running a scan for malware, cleaning your hard drive using 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the 6resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the cleanmgr.exe process on your computer, the following programs have proven to be helpful: ASecurity Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. BMalwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

cleanmgr.exe [all]