What is xmasscsi?

Xmasscsi.sys is a Windows driver. A driver is a small software program that allows your computer to communicate with hardware or connected devices. This means that a driver has direct access to the internals of the operating system, hardware etc. The free file information forum can help you determine if xmasscsi.sys is a Windows system file or if it belongs to an application that you can trust.

Run a free scan to check for xmasscsi drivers in need of updating

Xmasscsi.sys file information

The SCSI miniport process does not give any clues as to the producer or the name of the associated software; instead, only the following file properties can be determined.

Description: Xmasscsi.sys is not essential for Windows and will often cause problems. Xmasscsi.sys is located in the C:\Windows\System32\drivers folder. Known file sizes on Windows 10/8/7/XP are 5,248 bytes (57% of all occurrences) or 5,504 bytes. 
The driver can be started or stopped from Services in the Control Panel or by other programs. There is no description of the program. The program has no visible window. There is no detailed description of this service. Xmasscsi.sys is not a Windows system file. xmasscsi.sys appears to be a compressed file. Therefore the technical security rating is 48% dangerous, however you should also read the user reviews.

Recommended: Identify xmasscsi.sys related errors

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

Belongs to Alcohol 120%
  Sven Opitz   (further information)
Alcohol 120%
Alcohol 120 component
It is listed as: Spyware-Malware-Had computer problems since son used computer-NO GOOD!
  Stormy Josten   (further information) (further information)
Not much- But my son downloaded, & installed on my computer, Ive had problems with my DVD drive ever since. Supposed to help in copying movies
  Stormy J.   (further information)
this is stub afer remove Alcohol 120%

Rating chart

Summary: Average user rating of xmasscsi.sys: based on 6 votes with 6 user comments. 4 users think xmasscsi.sys is essential for Windows or an installed application. 2 users think xmasscsi.sys is dangerous and recommend removing it.

Do you have additional information? Help other users!
What do you know about xmasscsi.sys:
How would you rate it:
Link for more info:
Your Name:

Best practices for resolving xmasscsi issues

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

xmasscsi.sys [all]