What is RarExtLoader.exe?

The genuine RarExtLoader.exe file is a software component of WinRAR by Alexander Roshal.
WinRAR is a file archiver and compression tool used to create (pack) compressed files in the RAR and ZIP file formats. RarExtLoader.exe launches extensions for WinRAR. This is not an essential Windows process and can be disabled if known to create problems. WinRAR is features optional encryption for packed archives using the AES (Advanced Encryption Standard) with a 256-bit key, the ability to create split archives, self-extracting files, support for advanced NTFS file system options, file deduplication, and more. The program can also unpack ACE, ARJ, BZIP2, CAB, EXE, GZ, ISO, JAR, LHA, RAR, TAR, UUE, XZ, Z, ZIP, ZIPX, and 7z archives. The popular RAR format was developed by Eugene Roshal, a Russian software programmer. RAR stands for 'Roshal Archive'. His brother, Alexander Roshal, owns the copyright to the RAR format. WinRAR is currently offered as a trial version.

RARExtLoader stands for WinRAR Extention Loader

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 RarExtLoader.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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RarExtLoader.exe file information

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

The process known as 32 bit rarext.dll loader belongs to software WinRAR archiver or WinRAR or WinRAR Archivierer by Alexander Roshal (

Description: RarExtLoader.exe is not essential for the Windows OS and causes relatively few problems. RarExtLoader.exe is located in a subfolder of "C:\Program Files" or sometimes in a subfolder of Windows folder for temporary files. Known file sizes on Windows 10/8/7/XP are 44,032 bytes (76% of all occurrences), 114,688 bytes or 45,056 bytes. 
It is a file with no information about its developer. The program is not visible. The file is not a Windows system file. Therefore the technical security rating is 54% dangerous, however you should also read the user reviews.

Uninstalling this variant: You can safely remove the program using the uninstall program of WinRAR archiver or WinRAR (Control Panel ⇒ Uninstall a Program).

Recommended: Identify RarExtLoader.exe related errors

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

der hersteller ist rarlabs
  weazle   (further information)
This is part of the Winrar software by win.rar Gmbh Germany
  Roel Vlaar   (further information)
Maintains the .rar filetype association

Summary: Average user rating of RarExtLoader.exe: based on 5 votes with 3 user comments. 2 users think RarExtLoader.exe is essential for Windows or an installed application. 2 users think it's probably harmless. One user thinks it's neither essential nor dangerous. One user is not sure about it.

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Best practices for resolving RarExtLoader issues

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

RarExtLoader.exe [all]