What is FolderSizeSvc.exe?

The genuine FolderSizeSvc.exe file is a software component of Folder Size for Windows by Brio.
FolderSizeSvc.exe is the main executable that runs the Folder Size for Windows program, a utility that displays the size of folders as well as the files in the Windows Explorer menu. This is not an essential Windows process and can be removed if known to cause problems. This is an free, open source program distributed under the GNU General Public License with numerous users making contributions.

FolderSizeSvc stands for FolderSize Service

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 FolderSizeSvc.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 FolderSizeSvc.exe related errors

FolderSizeSvc.exe file information

Windows Task Manager with FolderSizeSvc
FolderSizeSvc.exe process in Windows Task Manager

The process known as FolderSize Service belongs to software Folder Size for Windows by Brio (

Description: FolderSizeSvc.exe is not essential for the Windows OS and causes relatively few problems. FolderSizeSvc.exe is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 131,072 bytes (47% of all occurrences), 98,304 bytes and 7 more variants. 
The program is not visible. The file is not a Windows system file. Therefore the technical security rating is 45% dangerous; however you should also read the user reviews.

Uninstalling this variant: If you are having problems with FolderSizeSvc.exe, you may also do the following:
  1) uninstall Java(TM) 6 or My Book Device Driver from your computer using the Control Panel applet Uninstall a Program
  2) go to the support area of the Oracle website
  3) make sure that you have installed the latest version.

Recommended: Identify FolderSizeSvc.exe related errors

Important: Some malware camouflages itself as FolderSizeSvc.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the FolderSizeSvc.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

Shows File and Folder size in Windows Explorer.
  Hiew   (further information)
With this File you can see folder sizes in detail mode
I tried to remove it from my hard drive by changing the /exe extension to .xfk, bu the next timew I booted it was back. Now I will try again, wiht "SSecurity Task Manager".
  Joe Luck  
It is a filesize program, to which I asked for.
Installed application which adds a column in Explorer's view showing file AND also Folders sizes
  Outlawtorn70   (further information)
The program is safe, actually it's a great utility
  Luis Gomez   (further information)
Folder Size is a extension app used to show you the Folder Sizes on your Windows Explorer on MS W-XP
  Sam   (further information)

Rating chart

Summary: Average user rating of FolderSizeSvc.exe: based on 13 votes with 7 user comments. 8 users think FolderSizeSvc.exe is essential for Windows or an installed application. One user thinks it's probably harmless. 3 users think it's neither essential nor dangerous. One user suspects danger.

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Best practices for resolving FolderSizeSvc issues

A clean and tidy computer is the key requirement for avoiding problems with FolderSizeSvc. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic 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 resmon 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 DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the FolderSizeSvc.exe process on your computer, the following programs have proven to be helpful: Security 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. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

FolderSizeSvc.exe [all]