What is mcsys.dll?

Mcsys.dll is a Windows DLL file. DLL is the abbreviation for Dynamic Link Library. DLL files are needed by programs or web browser extensions, because they contain program code, data, and resources. The following information can help you determine if mcsys.dll is a Windows system file or if it belongs to an application that you can trust.

Click to Run a Free Scan for mcsys.dll related errors

Mcsys.dll file information

mcsys.dll does not provide any particulars about the software with which the process was installed, nor is the developer identified within the file.

Description: Mcsys.dll is not essential for Windows and will often cause problems. The file mcsys.dll is located in the C:\Windows folder. The file size on Windows 10/8/7/XP is 29,184 bytes. 
The program has a visible window. There is no description of the program. The software is loaded during the Windows boot process (see Registry key: ShellServiceObjectDelayLoad). Mcsys.dll is not a Windows core file. mcsys.dll appears to be a compressed file. Therefore the technical security rating is 36% dangerous, however you should also read the user reviews.

Recommended: Identify mcsys.dll related errors

If mcsys.dll is located in a subfolder of C:\Windows, the security rating is 92% dangerous. The file size is 708,628 bytes. There is no description of the program. It is an unknown file in the Windows folder. The program is not visible. Mcsys.dll is able to monitor web browsers. There is no detailed description of this service. The file is not a Windows system file. Mcsys.dll is able to record keyboard and mouse inputs, hide itself, monitor applications and manipulate other programs.

Important: Some malware camouflages itself as mcsys.dll. Therefore, you should check the mcsys.dll 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

Added by the Troj/Pindrop-A Trojan
  Eugene Svirskiy   (further information)
  Digital Sin  
trojan.dropper virus, delete if possible.

Summary: Average user rating of mcsys.dll: based on 3 votes with 3 user comments. 3 users think mcsys.dll is dangerous and recommend removing it.

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

Best practices for resolving mcsys issues

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

mcsys.dll [all]