[Fixed] SysMain Causing High CPU And Memory Usage In Windows 11

In this article, we will see how to fix the SysMain service causing High CPU and Memory usage in Windows 11.

If you have recently switched to Windows 11, you might be facing high CPU and memory usage issues on your device. While this issue may be triggered by several reasons, an infamous SysMain process is known to consume a large part of the CPU and memory resources. For the uninitiated, SysMain is a windows service that comes in handy to analyze how you should be utilizing your hard disk. But you should know that SysMain is not at all necessary for the working of your PC.

So if you find that the SysMain service is causing CPU and memory usage, on Windows 11 you need to fix it as soon as possible. If not, you are bound to face performance issues on your PC. To help you out, in this article, we have put down several hacks that can help fix the SysMain service causing High CPU and Memory usage on Windows 11.

Also Read: Remove the System Requirements Not Met Watermark Windows 11

So let’s proceed to check them out one by one.

Reboot your PC

While this may seem absurd, rebooting your Windows PC is essential to temporarily subside any technical issues prevailing on your PC. So the same reason, restarting your PC can also help reduce the high CPU and memory usage. This is because it wipes out all the caches and resets windows settings and lets you make a fresh restart.

So go ahead and hit the Restart button to reduce the high CPU and memory usage temporarily.

Also Read: Top 11 Fixes For 0xc0000142 Error Windows 11/10

Run SFC Scan

Now when your system reboots and the high CPU usage is reduced considerably, you should go ahead and run the SFC command to scan your PC files. Later, it will also repair or recover the corrupt system files thus resolving the issues with the SysMain service.

So let’s begin:

• Press the Windows key and then type cmd in the search bar.
• Now select the relevant search result and then choose the Run as Administrator option from the context menu.
• Now, you need to enter the following command in the window and press the enter key.

sfc /scannow

Now, wait until the scan runs. It may take some time. When the scan is completed, a notification will approve of it.

• Wait and see if the high CPU and memory usage issue is fixed or not.

Also Read: How To Check For Updates On Windows 11/10 ?

Disable Sysmain service via Command Prompt

If you see no reduction in the high CPU and memory usage then, the next thing to do is to disable the Sys Main service itself using the command prompt. Here’s what you need to do:

• Launch the Command Prompt once again by typing Command Prompt in the search bar of the Start Menu.
• Now, highlight the Command Prompt in the search result and then choose the Run as Administrator option.
• Now type the following command in the command prompt window and then hit the enter key.

sc stop “SysMain” & sc config “SysMain” start=disabled

• Wait until you are notified that these services have been disabled.

Also Read: How To Set Up Microsoft Family App On Windows 11

Disable Backup Intelligent Transfer Service

For the uninitiated, Intelligent Transfer Service (BITS) is a Windows Service that is utilized by programmers and system administrators for downloading and uploading the HTTP web servers along with the SMB file shares. But, many users have reported that this service creates issues on your Windows 11 PC. So let’s disable it for good:

• Use the CTRL+ALT+DELETE key to bring up the task manager.
• Now go to the services tab here and then choose the Services from the built-in menu.
• Look for the “Background Intelligent Transfer Service” in the background section and then right-click it.

• Now choose the Stop option from the context menu.
• Finally, apply the changes and see if the CPU and memory usage is reduced.

Also Read: How To Remove Duplicate Files In Windows 11

Use Registry Editor To Disable Sysmain

You can also disable the SysMain service via the registry editor. If doing so from the command prompt gives you anxiety, you can try this method.

• For this, open the Run dialog box using the Windows+R shortcut key.
• Then type Regedit in the text box and hit the enter key to launch the Registry Editor.
• When in the Registry Editor, open the following path:

HKEY LOCAL MACHINE\SYSTEM\CurrentControlSet\Services\SysMain

• Now right-click anywhere within the right side and then choose the Modify option from the context menu.
• Then enter the digit ‘4’ in the Value data box and then press the OK button.
• After this press the OK button.
• Now reboot your PC to disable Service Host SysMain successfully.

Also Read: 6 Best Ways To Fix Time Sync Failed In Windows 11

Wrapping Up

There you go, folks! We hope you were able to fix the SysMain causing High CPU and Memory usage in Windows 11. Apart from the above fixes, you should also consider migrating from the mechanical disk to a solid-state drive (SSD) to reduce the CPU and memory usage to a good extent. Hope this helps!