What is SysMsgProxySrvc?

SysMsgProxySrvc.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 SysMsgProxySrvc.sys is a Windows system file or if it belongs to an application that you can trust.

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

SysMsgProxySrvc.sys file information

The process known as Cucusoft SysMsg Proxy and Data Log Service belongs to software Cucusoft Bandwidth Guard Driver or SysMsgProxyService Application by Cucusoft.

Description: SysMsgProxySrvc.sys is not essential for the Windows OS and causes relatively few problems. The SysMsgProxySrvc.sys file is located in a subfolder of "C:\Program Files". The file size on Windows 10/8/7/XP is 255,136 bytes. 
The program is not visible. The file has a digital signature. The file is not a Windows core file. SysMsgProxySrvc.sys is able to monitor applications and manipulate other programs. Therefore the technical security rating is 36% dangerous.

Uninstalling this variant: The software publisher Cucusoft provides update information ( You could uninstall the program using the Control Panel ⇒ Uninstall a ProgramCucusoft Net Guard or Cucusoft Bandwidth Guard Driver.

Recommended: Identify SysMsgProxySrvc.sys related errors

Important: Some malware camouflages itself as SysMsgProxySrvc.sys. Therefore, you should check the SysMsgProxySrvc.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.


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Best practices for resolving SysMsgProxySrvc issues

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

SysMsgProxySrvc.sys [all]