High CPU Service host sysmain can be caused by several things. 

Section: Corrupt files in the /etc/sysconfig directory. If your server is running low on memory, it might need more space to store the files necessary for your High CPU Service host sysmain to function correctly. This would cause High CPU Service host sysmain issues and make it difficult for users to access the Internet or perform tasks that had previously worked fine on their computer.

Section: Outdated software versions installed on your system or other hardware components that are incompatible with each other could also be causing High CPU Service host sysmain problems on your system. For example, suppose you’re using an outdated driver version for one piece of hardware (such as a video card) and installing software that uses different drivers (such as an operating system). In that case, this could lead to incompatibilities, which would cause High CPU Service host sysmain errors when used together.

What is Service Host Sysmain?

Service host Sysmain is a Windows service used to start other services, applications, processes, and tasks. This can be very useful in your computer if you want to run multiple operating systems on the same machine (like dual booting).

If you are having issues with Service Host Sysmain not working correctly or not responding at all, then there are some things you can do to fix this issue:

  • Ensure that no antivirus software is blocking your computer’s startup process by temporarily disabling it when troubleshooting this issue. You will also need to restart your computer after disabling the antivirus software before trying again with Service Host Sysmain.
  • If possible, try using another user account on your system instead of using an Administrator account because sometimes small changes made under an Administrator account can cause problems for other users who have given permissions for specific actions, which might include everything from system32/downloaded files folder location (.dll/.sys) permissions settings; registry keys creation/modification, etc.

You can also try using another account to check if this issue still occurs on your computer. If the problem is gone after you have used another version, there may be a conflict between the Administrator account and other user accounts on your system.

How to fix the Service host Sysmain on Windows 8 or 8.1?

To fix the Service host Sysmain on Windows 8 or 8.1, you can use the Task Manager to check the CPU usage. If you see high CPU usage, try to find out what is causing it by using the Task Manager tool. Suppose a program is responsible for causing high CPU usage. In that case, you can stop it from running by right-clicking on that program’s name and selecting the “Stop” option from its context menu or by pressing CTRL+ALT+DELETE key combination (that will open up Task Manager).

You should also close all programs that are currently running to free up some RAM space so that other processes run smoothly without any issues like freezing or crashing due to low memory resources being exhausted due to heavy load caused by multiple applications running simultaneously from different locations within our computer’s hard drive(s) – this could cause severe problems including system instability which may lead us having trouble accessing files stored within our folders/filesystems which will result in losing important data stored inside them forever! So make sure everything goes well before doing anything else because if something goes wrong, then no one will ever know why until after their death–or worse yet–until they’ve been reincarnated as another person who was born without memories whatsoever…

So if you have any questions or need assistance with anything, please feel free to contact us. We hope you enjoyed reading this article and will return for more exciting stuff like this!

How do we fix the Service host Sysmain in Windows 10?

  • Open the Task Manager and click on the Processes tab
  • Find the service host Sysmain process and right-click on it, then select End Process
  • Click Yes when prompted to confirm ending this process

Stop the Windows Process Monitor utility by clicking on the Start button and typing “Process Monitor” in the search box. Right-click on the process monitor icon that appears and selects Exit.

Open the Windows Task Manager by pressing Ctrl+Shift+Esc Type “ps” in the top left box and press Enter.

Find the process host Sysmain process and right-click on it, then select End Process. Click Yes when prompted to confirm ending this process.

Uninstall the offending program(s) and then re-install the application. If you still have the same problem, try another PC first. If it still needs to work, find out what causes this error.

If you are still experiencing the same problem, try another PC. If it has yet to work and you do not know what causes this error, find out what causes this error.

If you are using a PC, try another PC to see if it works. If not, then that means the problem is within your computer. If you’re using a laptop, try plugging in an external monitor and see if that fixes the issue.

If it doesn’t, then the problem is with your laptop. If you’re using an external monitor and it still doesn’t work, try plugging in another monitor. If that doesn’t work either, then there may be something wrong with your graphics card.

You can fix the Service host Sysmain quickly.

If you’ve followed the troubleshooting guide and still have the same problem, try another PC first.

If it hasn’t worked and you’re still having problems with Service host Sysmain, you can try a system restore point or contact an administrator for assistance with this error.

If the issue persists, it’s time to contact Microsoft support. Service Host Sysmain is a Windows service that provides an environment in which services run. It runs in the background, and you may only notice it if something goes wrong or another service relies on this one.

If you’re having trouble with Service Host Sysmain, you can try a few things before contacting Microsoft for support. First, try restarting your computer and then rerunning the program. If the error persists, try uninstalling any programs that may be causing the issue.


Service host Sysmain can be a significant headache if you have a Windows computer, so fix it as soon as possible.

By Admin