What is lzma.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 lzma.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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Lzma.exe file information

The lzma.exe process does not contain any indication of the producer (the software author) or the software with which it is associated.

Description: Lzma.exe is not essential for the Windows OS and causes relatively few problems. The lzma.exe file is located in a subfolder of the user's profile folder. Known file sizes on Windows 10/8/7/XP are 73,216 bytes (85% of all occurrences) or 184,320 bytes. 
There is no file information. The program is not visible. The file is not a Windows core file. Therefore the technical security rating is 56% dangerous; however you should also read the user reviews.

Recommended: Identify lzma.exe related errors

If lzma.exe is located in a subfolder of Windows folder for temporary files, the security rating is 56% dangerous. The file size is 65,536 bytes. There is no description of the program. The program is not visible. The file is not a Windows system file. lzma.exe appears to be a compressed file.

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

sie dient zum entpacken
  Markus   (further information)
spawned during java update
  Dane Brooke  
Wird z.B. bei der Java-Installation benutzt
I noticed thgis when updating Java in windows 10
Says is AppData\LocalLow\Sun\Java\jre1.7.0_65 ..So i think is part of Sun Java. Size: 142 KB (145,408 bytes) Size on Disk: 144 KB (147,456 bytes). I've not had any problems to do with, just going thru my '.exe' files.
Executed during Java update.
Used for extracting/compressing files using the LZMA algorithm. Not dangerous.
  Mogzol   (further information)
from what I can tell, this is a form of file explorer/archiving software used when installing.
Java seems to launch it - jan 18 2016

Rating chart

Summary: Average user rating of lzma.exe: based on 10 votes with 9 user comments. 4 users think lzma.exe is essential for Windows or an installed application. 3 users think it's probably harmless. 3 users think it's neither essential nor dangerous.

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Best practices for resolving lzma issues

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

lzma.exe [all]