csrss.exe cpu usage

What Should the Csrss.exe CPU Usage Be?

Csrss.exe CPU usage, in my experience, should be no more than 2,000 kilobits/second. In fact, when you find it in your task manger (alt+ctrl+delete) under Processes—it should be among the programs that are using the very least amount of memory. Nevertheless, many people contend that their Csrss.exe CPU usage is near the 100% mark.

Client/Server Runtime Subsystem (CSRSS) is a critical .exe file to Windows. Only one is supposed to exist in windows\system32, and only in the windows\system32 folder. If you find files such as Csrss.exe, autoexec.bat or a1d.tmp in “Startup” or “Services” in msconfig (start>run>msconfig)—uncheck them immediately.

Where to get help if your Csrss.exe usage meter is too high

microsoft support is a great place to get help when you are experiencing high Csrss.exe CPU usage. Sometimes a Csrss.exe variant can be a virus and sometimes it will be some form of malware (Trojans, spyware, etc) .

If you are using XP, it’s probable that your Csrss.exe folder has corrupted your user profile. Should this be the case, simply go into an account with Admin privileges and delete that profile. Of course, you will have to create another.

If this does not solve the problem, then you likely have a virus or some other form of malicious code stemming from a rogue Csrss.exe file. This can also validate the reason for the surplus Csrss.exe CPU usage. Malware bytes and HijackThis (from Trend Micro) are two excellent tools to combat the Csrss bug.