What is slrundll.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 slrundll.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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Slrundll.exe file information

Windows Task Manager with slrundll
Slrundll.exe process in Windows Task Manager

The process known as SLRunDll belongs to software Soft Modem by Smart Link (

Description: Slrundll.exe is an important part of Windows, but often causes problems. Slrundll.exe is located in the C:\Windows folder. Known file sizes on Windows 10/8/7/XP are 36,864 bytes (50% of all occurrences) or 24,576 bytes. 
There is an icon for this program on the taskbar next to the clock. There is no file information. The slrundll.exe file is an unknown file in the Windows folder. Slrundll.exe is not a Windows core file. Therefore the technical security rating is 48% dangerous, however you should also read the user reviews.

Recommended: Identify slrundll.exe related errors

If slrundll.exe is located in the C:\Windows\System32 folder, the security rating is 11% dangerous. The file size is 32,866 bytes. The slrundll.exe file is not a Windows system file. The file is a Microsoft signed file. The program is not visible.

Important: Some malware camouflages itself as slrundll.exe. Therefore, you should check the slrundll.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

Die slrundll.exe / slrundll.exe ist Teil eines Treibers (Soft Modem) der Firma “ Smart Link “. (V.90/92 Produktpalette - eventuell noch Andere
  Matthias Schulcz  
This file work in relation to the sound. Test it by stop proccess, when you dial up you have no sound
  Bill Blas  
This program gives software speaker support to your modem, which is not needed in XP
this program is a speaker's software which use to be necessary with Windows XP
I have no Process runing, called slrundll.exe - BUT if i try to delete this file, it copies itself back again!! It seems to be memory resident!!
I think Slrundll.exe is a trojan virus, it could be the backdoor entry for Rundll.exe. I think Slrundll.exe is a trojan virus, it could be the backdoor entry for Rundll.exe.
  Tushar Topale  
Whoever said slrundll is a trojan is right. just pay attention to your system, task manager, device managers, etc. It is everywhere running when things hang or show errors.
  Rob Yeske  

Rating chart

Summary: Average user rating of slrundll.exe: based on 8 votes with 7 user comments. 2 users think slrundll.exe is essential for Windows or an installed application. One user thinks it's probably harmless. 2 users think it's neither essential nor dangerous. 2 users suspect danger. One user thinks slrundll.exe is dangerous and recommends removing it.

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Best practices for resolving slrundll issues

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

slrundll.exe [all]