How to remove the 1sass virus

Most antivirus programs identify 1sass.exe as malware—for instance TrendMicro identifies it as WORM_MAINBOT.MCL or WORM_PALEVO.SMEJ, and Symantec identifies it as W32.Spybot.Worm or Trojan Horse.

The free file information forum can help you find out how to remove it. If you have additional information about this file, please leave a comment or a suggestion for other users.

Click to Run a Free Virus Scan for the 1sass.exe malware

1sass.exe file information

The process does not contain any company information.

Description: 1sass.exe is not essential for the Windows OS and causes relatively few problems. The 1sass.exe file is located in a subfolder of C:\Windows. Known file sizes on Windows 10/8/7/XP are 90,112 bytes (33% of all occurrences), 76,930 bytes, 72,736 bytes, 76,418 bytes or 47,746 bytes. 
The file is a file with no information about its developer. The 1sass.exe file is not a Windows system file. Therefore the technical security rating is 55% dangerous; however you should also read the user reviews.

Recommended: Identify 1sass.exe related errors

Important: You should check the 1sass.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

it' s seen on my pc when it' s opened firstly and automaticcally it close itself
  seda nur  

Summary: Average user rating of 1sass.exe: based on 1 vote with 1 user comment. One user thinks it's probably harmless.

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Best practices for resolving 1sass issues

The following programs have also been shown useful for a deeper analysis: ASecurity Task Manager examines the active 1sass process on your computer and clearly tells you what it is doing. Malwarebytes' well-known Banti-malware tool tells you if the 1sass.exe on your computer displays annoying ads, slowing it down. This type of unwanted adware program is not considered by some antivirus software to be a virus and is therefore not marked for cleanup.

A clean and tidy computer is the key requirement for avoiding PC trouble. 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.

Other processes

1sass.exe [all]