What is regprot.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 regprot.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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Regprot.exe file information

The process known as DiamondCS RegistryProt belongs to software REGPROT or HijackThis by Diamond Computer Systems Pty. (

Description: Regprot.exe is not essential for the Windows OS and causes relatively few problems. Regprot.exe is located in a subfolder of "C:\Program Files" or sometimes in a subfolder of the user's profile folder or in a subfolder of C:\. The file size on Windows 10/8/7/XP is 19,614 bytes. 
The program has no visible window. The application is loaded during the Windows boot process (see Registry key: MACHINE\Run). It is not a Windows system file. Therefore the technical security rating is 33% dangerous; however you should also read the user reviews.

Uninstalling this variant: You could completely remove HijackThis (Control Panel ⇒ Uninstall a Program).

Recommended: Identify regprot.exe related errors

External information from Paul Collins:

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

DiamondCS RegistryProt guards some areas of your registry which could contain autostart elements. Any change will trigger a confirmation dialog.
  Alex   (further information)
Used by DiamondCS registryprot to detect changes to the registry that may be harmfull
  KDE   (further information)
requests for registry change confirmation
  RegProtFan   (further information)

Summary: Average user rating of regprot.exe: based on 3 votes with 3 user comments. 3 users think regprot.exe is essential for Windows or an installed application.

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Best practices for resolving regprot issues

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

regprot.exe [all]