6.1.7600.16385 (win7_rtm.090713-1255) 32.64%
6.1.7600.16385 (win7_rtm.090713-1255) 51.83%
6.1.7600.16385 (win7_rtm.090713-1255) 0.07%
6.0.6000.16386 (vista_rtm.061101-2205) 2.80%
6.0.6000.16386 (vista_rtm.061101-2205) 0.86%
6.0.6000.16386 (vista_rtm.061101-2205) 11.79%



Windows Disk Defragmenter by Microsoft

Remove defrag.exe
This is a Windows system installed file with Windows File Protection (WFP) enabled.


defrag.exe has 6 known versions, the most recent one is 6.1.7600.16385 (win7_rtm.090713-1255). defrag.exe is run as a standard windows process in the context of the SYSTEM account with extensive privileges. During installation the program adds a job to the Task Scheduler. The average file size is about 201.75 KB. During the process's lifecycle, the typical CPU resource utilization is about 0.0038% including both foreground and background operations, the average private memory consumption is about 1.4 MB with the maximum memory reaching around 4.17 MB. Addionally, typically read and write I/O disk operations is about 470 Bytes per minute for reads and 6 Bytes per minute for writes.

What is defrag.exe?

Disk Defragmenter is a utility in Microsoft Windows designed to increase access speed by rearranging files stored on a disk to occupy contiguous storage locations, a technique called defragmentation. Defragmenting a disk minimizes head travel, which reduces the time it takes to read files from and write files to the disk. Beginning with Windows XP, Disk Defragmenter also reduces system startup times.

About defrag.exe (from Microsoft)

Disk Defragmenter consolidates fragmented files and folders on your computer's hard disk, so that each occupies a single, contiguous space on the volume As a result, your system can gain access to y


File name:defrag.exe
Publisher:Microsoft Corp.
Product name:Windows Disk Defragmenter
Description:Disk Defragmenter Module
Typical file path:C:\Windows\System32\defrag.exe
Original name:Defrag.EXE.MUI


(Note, the behaviors below are for all versions of defrag.exe, select a unique version for details.)
Scheduled tasks
  • The task 'ManualDefrag' runs in the path '\Microsoft\Windows\Defrag\ManualDefrag'
  • The task 'ScheduledDefrag' runs weekly in the path '\Microsoft\Windows\Defrag\ScheduledDefrag'
  • Entry path '\Defragmentation'
  • Entry path '\Microsoft\Windows\Defrag\ManualDefrag'
  • Entry path '\Microsoft\Windows\Defrag\ScheduledDefrag'

VersionsAll file variations of defrag.exe

MD5SHA-1File size
9e759edde1e45a4e55752cd2ed321f89 380e867c6625aeed69b5c86ed42ed9e98b9c23b3 172 KB
8fd0ec6eb52f9efe15b7a605c827932c 8dbf4ecae1bbad74c91fa37603353ecfdc47425e 179 KB
3611e0f7cd698f978fd1f4039c32926b 0e57cbbccf5de5ceb83869fbb0c24a6c689a1476 192 KB
b309fdaed2d3157e10268d22c5eafec6 b43698558c68c2e1d0d0d4b84bf318c8be3070f5 227.5 KB
fa9713d6409fd4ff58dd50f3f0e849af d6ee08082b725134de2c288643e30f93271a4352 218.5 KB
7f73b83e2c975b5057d36625fa3d1a71 ff87cbdd36e3161ea0e3c457d8e65396e5515945 221.5 KB

Windows OS versionsDistribution by Windows OS

OS versiondistribution
Windows 7 Home Premium 43.25%
Windows 7 Ultimate 29.75%
Windows 7 Professional 11.25%
Windows Vista Home Premium 7.75%
Windows Vista Home Basic 2.25%
Windows 7 Home Basic 2.00%
Windows Vista Ultimate 1.50%
Windows Seven Black Edition 0.75%
Windows 7 Enterprise 0.75%
Windows Vista Business 0.50%
Windows 7 Starter 0.25%

Distribution by countryDistribution by country

United States installs about 42.07% of Windows Disk Defragmenter.

OEM distributionDistribution by PC manufacturer

PC Manufacturerdistribution
Dell 23.73%
ASUS 19.59%
Hewlett-Packard 17.51%
Acer 12.05%
Toshiba 7.53%
Lenovo 4.14%
Sony 2.64%
Intel 2.26%
Samsung 1.88%
Alienware 0.94%
NEC 0.75%
Medion 0.75%
American Megatrends 0.75%
MSI 0.75%
Sahara 0.38%
Gateway 0.38%
Compaq 0.38%
Apple 0.38%
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