All You Need To Know: What Is Csrss.Exe & Is It A Virus?

What do you know about Csrss.exe? You might not know it, but right now, lots of hidden systems processes are executing in the Windows PC background. They let you check this page, tell the time, notify you of your new email, update your computer, and much more, all without any interaction using these processes.

Just take a look at your Windows Task Manager, however, you might know many system processes executing just like csrss.exe. If don’t know what is csrss.exe exactly, then don’t fret—it isn’t malware. Here’s everything you should know about the csrss.exe Windows process.


A quick google search will show lots of guides with clickbait titles, asking whether csrss.exe is a malware or not. As we’ve mentioned earlier, csrss is not a virus but it is a normal Windows system process. Aslo, it is an important system process.

Some background first. This process has been an essential part of the Windows OS since Windows 3.1, back in 1993. It remains and was a vital or essential component that helps to give limited access to other parts of the Windows OS without compromising your PC security.


Back in 1993, csrss.exe controlled your whole user interface. Like showing program windows, generating your mouse pointer, and much more. Now, csrss.exe it offers limited functionality, but still, it controls some relevant elements. Like ending the Windows graphical interface when you turn off your PC.

Turning off or erasing Csrss.exe should be impossible—Windows 10 can’t allow it, but the older model of Windows did. If you did this, however, your PC would crash, as Windows depends on csrss.exe to work efficiently.

How To Delete Csrss.exe From Windows 10

If you’ve looked for this query, stop before you do anything else. The original csrss.exe file is a vital Windows system component. Also. it can’t be erased without leaving Windows unable to function.

So please don’t try to delete the original csrss.exe file (found in C:\Windows\System32) from your Windows PC, as you’ll be forced to clean and reinstall Windows afterward.

There are also some scenarios where the csrss.exe file you view executing on your computer isn’t the original process. You can then check this after following the instructions below.

How to Check If Csrss.exe Is Harmful or Not


You might be looking at whether the csrss.exe process on your PC is harmful or not. In some situations, the answer is no—at least. It is due to the original csrss.exe process isn’t harmful. Also, it concentrates whether the process is real or not.

It has been claimed that some types of viruses try to copy the csrss.exe filename to hide itself as a system process. Thankfully, there’s an easy method to view if the csrss.exe file executing on your computer is real or not.

  1. Initially, head over to Windows Task Manager. You can do this by right-tapping the Windows Start menu. Or from the options menu, tapping the Task Manager option. On the other hand, hit Ctrl + Shift + Esc on your keyboard to manually open it.
  2. From the Processes tab in the Windows Task Manager window. Just look for the Client Server Runtime Process. Well, it is the official name for the csrss.exe process, and should be mentioned under Windows processes group. You might view it listed twice, but this isn’t an issue. If it isn’t listed in the Windows processes group, then this is likely a harmful process.
  3. If you like to check for yourself, right-tap one of the listed Client Server Runtime Process options. Then hit Open file location. You might want to repeat the steps for both listed processes.
  4. As it’ll open the location of the csrss process but it open in Windows File Explorer. If the original csrss process is executing, this should show the file inside the C:\Windows\System32 system folder. However, if that’s the scenario, then you are safe and don’t remove it.


If Windows File Explorer opens in a different location, however, then the process you’re executing isn’t the original Client Server Runtime Process (csrss.exe) file. Then you want to execute an urgent malware scan of your Windows PC to check for virus.

Can It Cause High CPU, RAM or Comsume Other High System Resource Usage?

The csrss.exe can’t do this in Windows 10, with most of its earlier responsibilities divide into other processes. That means that, for the some part, you shouldn’t view much system resource usage from this process.

csrss cpu usage

If you check a Client Server Runtime Process mentioned in Windows Task Manager that is using a high resources of system (like high RAM or CPU usage), then it would highlite some sort of issue with your Windows installation.

  • Check that the file is malware free using the steps mentioned above. It includes executing a boot-level scan of your computer. If you’re confident virus isn’t the issue, then there could be another problem using your whole Windows installation.
  • You can also check your graphics drivers if you’ve install a new graphics card recently. This is another reason.
  • If nothing works and still your system resource usage is still too high. Then you might want to reset your Windows installation to initiate with a fresh set of system files and a latest configuration.

Some Error Messages:

Few csrss.exe error messages occur that are as follow:

  • “csrss.exe Application Error.”
  • “csrss.exe failed.”
  • “Cannot find csrss.exe.”
  • “csrss.exe has encountered a problem and needs to close. We are sorry for the inconvenience.”
  • “csrss.exe is not a valid Win32 application.”
  • “Error starting program: csrss.exe.”
  • “csrss.exe is not running.”
  • “csrss.exe not found.”
  • “Faulting Application Path: csrss.exe.”

How To Resolve It:

A clean PC is one of the best ways to avoid bugs. It means performing viruses scans, wiping your hard disk with sfc /scannow or cleanmgr, analyzing any auto-start programs (with msconfig), uninstalling programs you don’t need, and turning on automatic Windows updates. Always make daily backups or at least define recovery points.

If you have face any issue. Use the resmon command to check the processes that are creating issues. Also, in case of serious issues, rather than reinstalling Windows, you must try to repair your installation or, in case of Windows 8, after running the command DISM.exe /Online /Cleanup-image /Restorehealth. This enables you to repair the OS without data loss.


Having complete knowledge of computers is not enough for everyone. You must know which program and application are running on your PC or is it harmful or not. So, our guide focus on the complete overview of csrss.exe. I hope you understand it very well. If you still have any queries and questions let us know below!

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