Client server runtime process is causing a lag in windows explorer

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Chris HoffmanEditor-in-Chief

Chris Hoffman is Editor-in-Chief of How-To Geek. He"s written about giải pháp công nghệ for over a decade & was a PCWorld columnist for two years. Chris has written for The Thủ đô New York Times, been interviewed as a technology expert on TV stations like Miami"s NBC 6, & had his work covered by news outlets like the BBC. Since 2011, Chris has written over 2,000 articles that have sầu been read nearly one billion times---& that"s just here at How-To Geek. Read more...

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UpdatedOct 30, 2018, 5:51 pm EDT| 2 min read
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If you have sầu a Windows PC, open your Task Manager & you’ll definitely see one or more Client Server Runtime Process (csrss.exe) processes running on your PC. This process is an essential part of Windows.

RELATED: What Is This Process & Why Is It Running on My PC?

This article is part of our ongoing series explaining various processes found in Task Manager, like svchost.exe cộ, dwm.exe cộ, ctfmon.exe cộ, mDNSResponder.exe cộ, rundll32.exe pháo, Adobe_Updater.exe, and many others. Don’t know what those services are? Better start reading!


What Is Client Server Runtime Process?

The csrss.exe cộ process is an important part of the Windows operating system. Before Windows NT 4.0, which was released in 1996, csrss.exe was responsible for the entire graphical subsystem, including managing windows, drawing things on the screen, and other related operating system functions.

With Windows NT 4.0, many of these functions were moved from the Client Server Runtime Process, which runs as a normal process, to the Windows kernel. However, the csrss.exe pháo process is still responsible for console windows and the shutdown process, which are critical functions in Windows.

RELATED: What Is conhost.exe cộ và Why Is It Running?

Prior to Windows 7, the CSRSS process drew console (Command Prompt) windows itself. On Windows 7 and later, the Console Host (conhost.exe) process draws console windows. However, csrss.exe is still responsible for launching the conhost.exe pháo process when necessary.


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In other words, this process is responsible for a few critical system functions in the background. That’s just how Windows does things.

Can I Disable It?

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You can’t disable this process, as it’s a crucial part of Windows. There’s no reason to lớn disable it, anyway—it uses a tiny amount of resources & only performs a few critical system functions.

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If you go into lớn the Task Manager & try to lớn end the Client Server Runtime Process, Windows will insize you that your PC will become unusable or shut down. Cliông xã through this warning and you’ll see an “Access is Denied” message. This is a protected process you can’t terminate.

RELATED: Everything You Need To Know About the Blue Screen of Death

Windows always launches this process at startup. If csrss.exe cộ can’t be launched when Windows boots, Windows will xanh screen with error code 0xC000021A. That’s how critical this process is.

Could It Be a Virus?

It’s normal for this process—or even multiple processes with this name—to always be running on Windows. The legitimate csrss.exe tệp tin is located in the C:Windowssystem32 directory on your system. To verify it’s the real Client Server Runtime Process, you can right-clichồng it in Task Manager & select “mở cửa tệp tin location”.

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File Explorer or Windows Explorer should open khổng lồ the C:WindowsSystem32 directory containing the csrss.exe tệp tin.

If someone told you that the csrss.exe cộ file located in C:WindowsSystem32 is a virut, that’s a hoax. This is the real file & removing it will cause problems with your PC.


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Tech support scammers have been known lớn say “if you see csrss.exe pháo on your PC, you have sầu malware”. Every PC has a Client Server Runtime Process running and that’s normal. Don’t fall for the scam!

However, if you’re concerned about malware, it’s a good idea to lớn run an antivirut scan anyway. Malware can sometimes infect or replace legitimate Windows files.

See more: Phục Hồi Mật Khẩu Bundle 2018 Serial Key Excel Password Recovery

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If the csrss.exe cộ tệp tin is in any other directory, you have sầu a problem. Some malware programs disguise themselves as csrss.exe to lớn avoid suspicion. (Additional copies of the file may be in other directories, but they shouldn’t be running from that directory.)

RELATED: What"s the Best Antivirus for Windows 10? (Is Windows Defender Good Enough?)

Whether you see a csrss.exe cộ tệp tin in the wrong thư mục or you’re just concerned you might have sầu malware in general, you should run a system scan with your preferred antivirus tool. It will check your PC for malware & remove anything it finds.


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Chris HoffmanChris Hoffman is Editor-in-Chief of How-To Geek. He"s written about technology for over a decade and was a PCWorld columnist for two years. Chris has written for The Thành Phố New York Times, been interviewed as a công nghệ expert on TV stations like Miami"s NBC 6, & had his work covered by news outlets like the Đài truyền hình BBC. Since 2011, Chris has written over 2,000 articles that have been read nearly one billion times---and that"s just here at How-To Geek. Read Full Bio »