What is dumprep.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 dumprep.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.

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Dumprep.exe file information

Windows Task Manager with dumprep
Dumprep.exe process in Windows Task Manager

The process known as Windows Error Reporting Dump Reporting Tool belongs to software Microsoft Windows Operating System by Microsoft (

Description: Dumprep.exe is an important part of Windows, but often causes problems. Dumprep.exe is located in the C:\Windows\System32 folder. Known file sizes on Windows 10/8/7/XP are 10,752 bytes (90% of all occurrences), 31,232 bytes, 9,216 bytes or 16,384 bytes. 
The dumprep.exe file is a trustworthy file from Microsoft. The application starts when Windows starts (see Registry key: MACHINE\Run). It is not a Windows core file. Therefore the technical security rating is 3% dangerous, however you should also read the user reviews.

Recommended: Identify dumprep.exe related errors

Important: Some malware disguises itself as dumprep.exe, particularly when not located in the C:\Windows\System32 folder. Therefore, you should check the dumprep.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

I think it may be Windows XP error reporting tool. Although it seems to remain resident in memory for a long time after you report the error.
its all your extremely important files, such as the windows update magager, do not delete or screw around with any of these files.
Whenever an error occurs, e.g. a crash in photoshop dumprep uses almost 100% of my cpu and my pc will not respond correctly until i end the process. Tried to delete it but just seems to appear from nowhere.
Seems like everytime my computer locks up, dumprep.exe opens up. Closing it unfreezes the system.
As stated by an earlier reviewer, I have noticed that dumprep.exe stays resident in the system memory long after it has served its use. What is worse, I have noticed several different instances of the version resident in my memory long after their use - and they SIGNIFICANTLY slow down my speed. I just go to the Windows Task Manager and kill these sessions. This ALWAYS improves my performance/speed very noticeably.
  An application expert, not system-pro.  
Slows down my computer as hell, and seems to corrupt iexplore.exe using it for an unknown purpose
it prepares a huge dump; it's very slow, and not practically beneficial
  greg   (further information)
dumprep spends time preparind data even if you dont send. killing it returns teh system to you....
It is run whenever Windows crashes (explorer.exe). Closing it wil fix any problems and increase system speed noticably.
when the windows enconted an error that time the dumpprep service is activated in task manager in processes and also it comes every boot so at first we need to uncheck it from start up from msconfig command from run
A real pain especially in IE or Quicken, eliminate it from Msconfig - startup tab - uncheck dumprep.exe
It is the Windows error report generator. It creates a memory dump report to send to Microsoft (if you choose yes to send it) whenever you manually terminate an hung application. I would not suggest attempting to delete it but terminating it through Task Manager is probably OK.
This is the microsoft error reporting tool. To disable/delete it, see this help section on the microsoft website.
  Sha   (further information)
If it annoys you , as it did me, by being detected as a "possibly Masked Rootkit - system monitor, Turn it off. First go start , run, type in- msconfig (enter) Under the"general" tab select "selective startup" under "Startup" tab, uncheck dumprep (could be dumprep"O -k or O -U or dumprep.exe). Click on "Apply" then ok, then you'll be asked to restart your computer. On restart, Check the don't ask me box and Ok. Next, right click "My Computer" Properties, Advanced, (under "Starup and recovery) "Settings", Write Debugging information, scroll down, select "None". (For XP)
  Ernie from Oz  
Per MS. It a third party error reporting program. It can be permently turned off, if desired
I see it any time IE hangs up.
dumprep always seems to lock my system up once I press CTRL-ALT-DEL to end a none-responding program (XP with Service Pack 3) Often whenentering Task Manager to end the non-responsive program it cannot be ended until I enter the 'Processes tab and end the 'dumprep.exe' ├╝rpgram shown in the running processes log (often multiple entries because I pressed the CTRL-ALT-DEL comination more than once, wondering why the program refused to shut down). Doing this immediately unfreezes the non-responsive program which shurts down and the computer becomes usable once more.
  John Walton  
I know it uses 100% of resources, opens multiple instances and appears to serve no useful purpose to me. In addition, I have owned this machine 3 years, but only encountered this program the past week.
I delete dumprep because it always uses 100pc of my cpu, and I can't use the internet when it is on my system, but when windows down loads additional information it always reappears on my system. It does not appear to be doing anything useful, and do not affect the running of the computer when it is not there.Barrie.
Dumprep.exe consumes 100% of CPU usage and stops everything else from running or even shutting down. Annoying as hell!
it locks up my notebook effectively choking my CPU 100% - it is a piece of crap!!
  Grant wants a MAC  
dumprep.exe seems to just pop in and ou from nowhere, bogging my pc down considerably. It seems to stem from IE; I've never had problems with it while not on the internet. However, it also doesn't seem to startup with IE. It only slows me down occasionally and as soon as I end the process it clears up, can't figure out a way to fully rid myself of it though, I've tried msconfig and regedit, its not in either database.
it is found slowing down my computer around the same time that my yahoo messenger windows get "wrapped" in blue , I fear it is loaded by some rogue virus not detected by different virus scanners
Windows program that reports program-crashes but slows the pc down if a problem occurs
It appears everytime IE hungs up. IE can't be closed via taskmanager, but when dumprep.exe is finished, the ie closes.
It's an extremely annoying pos I deleted all the executables.
I know that if I cannot get my internet browser to shut down, and I go to the task manager, if dumprep.exe is present and I end its process, my internet window will then shut down. All of my internet windows will shut down.
its just a reporting tool for microsoft, when an error occurs it assembles all data on the error for reporting to big deal, a nonessential app and you can turn it off with no prob, turn it back on anytime...r click my computer, properties, advanced, error reporting, then disable...done
dumprep is basically a pain in the arse and your computer will run better without it. i deleted it and my computers is running much better.
  colshy boy  
Dumprep pops up whenever firefox error appears
whene my internet doesent react i delete dumprep en evrything is back alright
I caused my CPU usage to be 100% with my hard-drive running flat out and would not stop. Windows Task Manager could not stop it. As soon as NORTON identified the problem, I deleted it and the cpu usaged dropped to 2% and the hard drive slowed to a near stop. As far as i'm concerned its a nusence that ticks me off.
You can disable this by going to: My Computer Properties Advanced (tab) Error Reporting (button), then click "Disable Error Reporting" (you may check the "still notify me when errors occur" box).
  Screaming Monkey  
It report error or not respront programs to microsoft if click send or only collect if click dont send
Well, it is a Windows DEFAULT Program installed by Windows itself that writes on a txt. file the error if you terminate a frozen/hung app. Then, it sends it to Microsoft (with permission!) It does severe lag while doing its work and sometimes will activate just after the PC turns on. If, for example, BOOM! Unity.exe is not responding big time, and you terminate it, it will lag like OMG and from then on you can see dumprep.exe on the Task Manager. If it activates after frozen exes sessions, TERMINATE IT. But, do not delete it. If you are sick with lag, just delete. Its your choice.
  Experienced Frozen Minecraft  
Dumprep.exe can be removed from the PC startup. The Windows XP-based computer may run slowly and you may receive Dumprep.exe error messages due to Dumprep.exe. See Microsoft support page for details.
  CalgaryTech   (further information)
I found this file in c\windows\prefech. I don't know what to think of it.

Rating chart

Summary: Average user rating of dumprep.exe: based on 38 votes with 37 user comments. 7 users think dumprep.exe is essential for Windows or an installed application. 4 users think it's probably harmless. 19 users think it's neither essential nor dangerous. 7 users suspect danger. One user thinks dumprep.exe is dangerous and recommends removing it. 6 users don't grade dumprep.exe ("not sure about it").

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Best practices for resolving dumprep issues

A clean and tidy computer is the key requirement for avoiding problems with dumprep. 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 dumprep.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

dumprep.exe [all]