How To Disable Msmpeng.exe To Reduce High CPU Usage – A very common problem in Windows computers is the ineffectiveness of the OS in CPU usage, Windows often uses too much CPU load so Windows often hangs or freezes. The latest Windows, namely Windows 10, is also still experiencing the same thing in high CPU usage, this problem has also occurred in previous versions of Windows both Windows 8 and 7.
In this article I will discuss how to reduce high CPU usage after update KB4512941 on Windows 10. And many users have complained that the process running by msmpeng.exe is causing high spikes in CPU usage. There are many Windows users who think that it is a virus file, but on the contrary, msmpeng.exe is a system process which is handled by Windows’ built-in antivirus.
So, let’s better understand the problem and learn how to disable the msmpeng.exe process to reduce high CPU usage on Windows 10 computers.
How to Disable Msmpeng.exe to Reduce High CPU Usage
Before getting into the core guide on how to disable Msmpeng.exe to reduce high CPU usage, let me clarify that Msmpeng.exe is not a virus. In fact, it is an Antimalware Service Execution process that is run by Windows’ built-in antivirus namely Windows Defender (now called Windows Security). Many users have encountered this issue to a database file called mpenginedb.db which is used by Windows Defender to store hash values.
Due to some incorrect identifiers, Windows Security continuously scans all the data stored on the hard disk and repeats it in the database file. As a result, CPU usage increased from 50% to 100%. So, we have to delete the mpenginedb.db file to fix this problem.
Delete the Mpengine.db file
1. Since Mpengine.db is a system file related to antivirus, you cannot delete it in the normal way. First you have to temporarily disable the antivirus and then only then can you delete the file. So open Windows Security and go to “Virus and threat protection”. Here, click “Manage Settings”.
2. After that, disable all switches or toggles on “Real-time protection” and “Cloud Delivered Protections” as shown below.
3. Now, press and hold the “Shift” key and restart your computer. This will boot Windows into the “Advanced Recovery Window” menu.
4. Here, select Troubleshoot -> Advanced Options -> Startup Settings -> Restart. After that, press the numeric key “4” to boot into Safe Mode.
5. Once you are in the “Safe Mode” environment, search for “registry” in the Windows Search box. After that, click “Run as administrator” in the right pane.
6. Copy or Copy the address below and paste it in the Registry search field and hit enter. You will be immediately taken to the Windows Defender folder.
7. Right click on “Windows Defender” and select New -> DWORD (32-bit) value. Name the file “DisableAntiSpyware” and click the “Ok” button.
8. Now double click on the file and change the value to 1. After that, click on the “Ok” button and restart your computer.
9. This time, search for “Powershell” and run it as Administrator (Run as administrator).
10. After that, copy the command below and paste it in your PowerShell window. After that, hit enter. This will delete the mpengine.db file from your PC.
Remove-Item 'C:ProgramDataMicrosoftWindows DefenderScansmpenginedb.db'
11. Now open the Registry again and delete the file “DisableAntiSpyware”. After that, restart your computer and Windows Security will start working again. And this time, you won’t see Msmpeng.exe causing a high CPU usage spike. If you are still facing the same problem then reinstall Windows or disable the default antivirus windows defender and use it the best antivirus third party.
How to disable Msmpeng.exe on your Windows PC
So that is how you can delete the mpengine.db file to lower or reduce the high CPU usage. As I said, the problem is with Windows Defender which is scanning the entire disk due to a false positive result. Even though the process is a bit complicated, you can definitely do it if you follow this guide step by step.
Hopefully this article was useful and resolves the problem of high CPU usage on your Windows 10 due to the msmpeng.exe process. Good luck and good luck. 🙂