What is SLEE81.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 SLEE81.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.

Click to Run a Free Scan for SLEE81.exe related errors

SLEE81.exe file information

Windows Task Manager with SLEE81
SLEE81.exe process in Windows Task Manager

The process known as SLEE81.exe belongs to software Steganos Security Suite by Steganos GmbH (

Description: SLEE81.exe is not essential for the Windows OS and causes relatively few problems. SLEE81.exe is located in the C:\Windows\System32 folder. The file size on Windows 10/8/7/XP is 36,864 bytes. 
There is no file information. The program has no visible window. The software can be removed using the Control Panel's Add\Remove programs applet. The SLEE81.exe file is not a Windows core file. Therefore the technical security rating is 53% dangerous, however you should also read the user reviews.

Uninstalling this variant: If you want to remove the program completely, go to Control Panel ⇒ Software ⇒ Steganos Security Suite.

Recommended: Identify SLEE81.exe related errors

Important: Some malware disguises itself as SLEE81.exe, particularly when not located in the C:\Windows\System32 folder. Therefore, you should check the SLEE81.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

Steganos Live Encryption Engine
It is the encrytion engine used by steganos safe.
  EvilAngel   (further information)
the file is part of steganos security suite
Part of Steganous Security Package
    (further information)
Part of Steganos Security Suite - An encryption engine. This will only appear if you have Steganos Security Suite installed on your computer.
  Gasur   (further information)
Steganos Security Suite 7
    (further information)

Rating chart

Summary: Average user rating of SLEE81.exe: based on 16 votes with 6 user comments. 15 users think SLEE81.exe is essential for Windows or an installed application. One user thinks it's neither essential nor dangerous.

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Best practices for resolving SLEE81 issues

A clean and tidy computer is the key requirement for avoiding problems with SLEE81. 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 SLEE81.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

SLEE81.exe [all]