Should I block it?

No, this file is 100% safe to run.

VersionsAdditional versions

6.3.9600.16384 (winblue_rtm.130821-1623) 8.54%
6.3.9600.16384 (winblue_rtm.130821-1623) 0.50%
6.3.9600.16384 (winblue_rtm.130821-1623) 12.81%
6.3.9431.0 (winmain_bluemp.130615-1214) 1.26%
6.3.9431.0 (winmain_bluemp.130615-1214) 0.25%
6.2.9200.16384 (win8_rtm.120725-1247) 12.31%
6.2.9200.16384 (win8_rtm.120725-1247) 62.56%
6.2.8400.0 (winmain_win8rc.120518-1423) 0.50%
6.2.8400.0 (winmain_win8rc.120518-1423) 0.50%
6.2.8250.0 (winmain_win8beta.120217-1520) 0.25%
6.2.8102.0 (winmain_win8m3.110823-1455) 0.50%

Relationships

defrag.exe

Windows Drive Optimizer by Microsoft

Remove defrag.exe
Version:   6.2.8400.0 (winmain_win8rc.120518-1423)
MD5:   050bd1bb9e251f2aa366eea8eb1ef75b
SHA1:   a40a33ee97d0e6759a83a989f0341f3df85dac6e
This is a Windows system installed file with Windows File Protection (WFP) enabled.

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

DetailsDetails

File name:defrag.exe
Publisher:Microsoft Corp.
Product name:Windows Drive Optimizer
Description:Disk Defragmenter Module
Typical file path:C:\Windows\System32\defrag.exe
Original name:Defrag.EXE.MUI
File version:6.2.8400.0 (winmain_win8rc.120518-1423)
Product version:6.2.8400.0
Size:177 KB (181,248 bytes)
Digital DNA
File packed:No
.NET CLR:No
More details

BehaviorsBehaviors

Scheduled tasks
  • The task 'ManualDefrag' runs in the path '\Microsoft\Windows\Defrag\ManualDefrag'
  • The job 'ScheduledDefrag' runs in the path '\Microsoft\Windows\Defrag\ScheduledDefrag'
  • Entry path '\Microsoft\Windows\Defrag\ScheduledDefrag'

Windows OS versionsDistribution by Windows OS

OS versiondistribution
Windows 8.1 23.00%
Windows 8 21.00%
Windows 8 Pro 17.50%
Windows 8.1 Pro 10.50%
Windows 8 Single Language 7.00%
Windows 8.1 Single Language 4.00%
Windows 8 Pro with Media Center 4.00%
Windows 8.1 Pro with Media Center 3.00%
Windows 8 Enterprise 2.00%
Windows 8.1 Pro Preview 2.00%
Windows 8 Enterprise N 1.00%
Windows 8.1 Enterprise 1.00%
Windows Developer Preview 1.00%
Windows 8.1 N 0.50%
Windows 8.1 Enterprise Evaluation 0.50%
Windows 8 Enterprise Evaluation 0.50%
Windows 8 Pro N 0.50%
Windows 8.1 Single Language Preview 0.50%
Windows 8.1 Pro Preview with Media Center 0.50%

Distribution by countryDistribution by country

United States installs about 39.20% of Windows Drive Optimizer.

OEM distributionDistribution by PC manufacturer

PC Manufacturerdistribution
Lenovo 16.42%
ASUS 14.18%
Dell 14.18%
Toshiba 13.43%
Hewlett-Packard 13.06%
Acer 10.82%
Sony 7.46%
Intel 3.73%
GIGABYTE 2.99%
Samsung 1.49%
Alienware 0.75%
Medion 0.75%
American Megatrends 0.75%
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