Service Host: SysMain freezing up my computer.

I have had Service Host:SysMain freezing up my computer. I can't even get the task manager to open up.

One thing I think Microsoft should do besides fix this problem, is when I want to to open up the Task Manager it had better open up really quick. 

Anyways this Service Host:SysMain will just take over the computer at odd times and I will not be able to do anything and it will freeze up the computer. 

The fix the last few days, since it went on and on was to power off the computer. 

It is 2020 and I would think Microsoft would have learned by now how to design an operating system. 

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Hi Edward

I am Dave, an Independent Advisor, I will help you with this . . .

SysMain,used to be known as SuperFetch and that process is known to lock up a PC by using 100% disk

Click your Start Button, then just type services and press Enter

On the resulting Services utility, scroll down to find SysMain

Double click that service, and stop that service, then set its Startup type to disabled and save that

Close the Services utility and restart your PC . . .
___________________________________________________________________

Power to the Developer!

MSI GV72 - 17.3", i7-8750H (Hex Core), 32GB DDR4, 4GB GeForce GTX 1050 Ti, 256GB NVMe M2, 2TB HDD

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I am not restarting my computer once a day and have to wait 30 minutes.

Not really an answer. 

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Hi Edward

SysMain, is not required by your system it is an old technology supposed to make applications start faster, it is not required on newer systems and as you have seen, it causes serious lagging when it goes wrong
___________________________________________________________________

Power to the Developer!

MSI GV72 - 17.3", i7-8750H (Hex Core), 32GB DDR4, 4GB GeForce GTX 1050 Ti, 256GB NVMe M2, 2TB HDD

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Where did he say "once a day?"

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Stop Service host SysMain Process

We can simply stop the SysMain process and speed up our PC, but there are multiple ways to accomplish this task. The easiest way is to simply end Service host SysMain high disk usage from windows services or from the command prompt. However, sometimes the process stays hidden in the background eating up all the memory. We can stop the service host SysMain process from the registry editor as well. Here are all of the process for stopping SysMain in windows,

Stop SysMain Process from Windows Service

Type “services.msc” in Run windows(Windows+R) to open service
Then find Service host: SysMain from other services, right click on that and open properties
Now in the general tab, near service status, click the stop button
Service Host SysMain High Disk

This will stop the SysMain services and high disk usage in the system. We can stop this service from the Task manager too, just find the Service host: SysMain, right-click on that process and end task.

Service Host SysMain High Disk

Once you stop the services from either one of them, restart your PC to check again for Service host SysMain high disk usage. If you still find the service up and running, try other methods.

check here for more tutorial about service host sysmain process. Service Host SysMain High Disk Usage in Windows 10

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Really helpful. Puzzling over this for an hour. I just stopped the service after setting it to disabled and the the disk usage dropped to 3%. Didn't need a restart.

One one the comments misunderstands "disabling". It stays disabled until re-enabled. It won't enable itself on a reboot.

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Last updated September 19, 2021 Views 10,301 Applies to: