Solution to Vsserv.exe Error

The BitDefender Virus Shield service, or vsserv.exe, is associated with protective software from BitDefender. The process is an integral part of BitDefender protective tools, such as BitDefender Antivirus. The main function of this process is to scan your Windows computer for malware.

By default, vsserv.exe runs automatically every time you start Windows. It does so to ensure that your computer is protected against Internet security threats. The process places an icon in your system tray, which you can use to quickly access this utility. Please note that if you use any BitDefender product, you should not terminate this process. Terminating this process will prevent your BitDefender product from working properly. As a result, your PC will become vulnerable to malware attacks.

This file is located in a subfolder in C:\Program files and is commonly found in the following sizes – 335,872, 389,120, 462,848, 331,776, 111,688, 311,296, 385,024, 94,208, 1,216,512, 446,464, 90,112, 86,016, 114,688, and 315,392 bytes.


You may encounter the following error when you start Windows or try to launch your BitDefender software:

“Buffer overrun detected!

Program C:\Program Files\Softwin\BitDefender10\ vsserv.exe
A buffer overrun has been detected which has corrupted the program’s internal stat. The program cannot safely continue execution and must now be terminated.”


You can fix the above-mentioned exe error by updating your BitDefender software. To do this, perform the steps listed below:

  1. Double-click your BitDefender software’s icon on your desktop.
  2. Click Update.
  3. Click Update Now.

Vsserv.exe High CPU Usage Issue

One common complaint of this process is that it frequently reports high CPU usage (anything between 50%-100%) and causes system slow downs or freeze ups. Without any valid reason, this process will report abnormally high CPU usage for 2-5 minutes before things return to normal. During this inexplicable spike in vsserv.exe high CPU consumption, using other applications becomes nearly impossible.

If you are experiencing constant high CPU consumption due to this process, then we recommend you contact BitDefender Support for a remedy. In case no solution is available, it is worthwhile to consider installing another antivirus software, one which protects your PC from Internet security threats, but doesn’t drain your system resources.

Just a few words of advice here – ensure that you only run one antivirus tool on your computer. Different antivirus tools are likely to conflict with each other and cause more errors and performance-related issues.