How to fix Windows Host Process rundll32 high disk usage issue

How to fix Windows Host Process rundll32 high disk usage issue.Windows , being one of the most used platforms among PC users , is also very productive. This productivity is the result of thousands of services and processes that continue to run in the background and in the foreground. In this post, we will discuss one of these essential processes, the Windows Host process rundll32.exe . We will learn all the relevant information that we should know about this. Later on, we will guide you to fix Windows host process rundll32 high disk usage issue in few minutes. If you are the one suffering from this problem, then thankfully, you have landed in the right place.


What is Windows Host Process rundll32.exe?

If you’ve been using Windows for a good amount of time, you must have seen the billions of documents or * .dll (Dynamic Link Library) files in every app organizer. These are used to store regular parts of the application that can be accessed from many applications. Since there is no real way to open a DLL file directly, the rundll32.exe application is essentially used to dispatch the utility stored in shared .dll documents. This executable is a reliable and safe component of Windows, and generally shouldn’t be a danger.

This file is generally located in the following path: Windows System32 rundll32.exe . However, sometimes spyware or malware uses a similar file name and keeps running from the other registry with a specific end goal to hide. If you think such a threat resides on your computer, I recommend that you search for threats using strong antivirus software.

What is the Windows Host Process rundll32 high disk usage problem?

Sometimes the generic Windows host process rundll32.exe starts to malfunction causing high disk or CPU usage. This will slow down and crash the general functions of the computer, and may eventually freeze the PC. This is known as the Windows host process rundll32 high disk usage issue . This is a popular problem among Windows users. The worst part is that this cannot be fixed by simply rebooting the system. You have to solve the problem manually, all by yourself. There are several ways available to fix this, and I’ll tell you the ones that work the best.

How to fix Windows Host Process rundll32 high disk usage issue.

Of all the solutions, I present you the 3 most active ones. You don’t need any special skills to use any method. I am providing the step by step tutorial with each method. Just follow the steps and you can fix the Windows host process rundll32 high disk usage issue.

1. Disable telemetry service.

The Windows telemetry service collects data from your system and compares it with that of your computer. It will then diagnose any discrepancies / changes that will be used to improve the user experience in the future. However, sometimes this feature leads to the problem of high disk usage of Windows host process rundll32. In this case, you can disable the telemetry service to solve the problem. Follow these steps:

Step 1: Press Windows Key + R  to activate the Run dialog . Type in » services.msc » and press Enter .

Step 2: In the Services window, find » Connected User Experience «. After locating it, double-click on it to open its settings.

Step 3: Now click on » Stop » under the service status. Then choose » Startup type » and set the option to  Disabled . After making these changes, click OK and close all windows.

Step 4: Finally, restart your PC.

2. Uninstall Google App Engine.

Google App Engine is a web framework for developing or hosting web applications in data centers managed by Google. As reported by many users, the Google App Engine installation leads them to the problem of high disk usage of Windows host process rundll32. If this is also the case on your computer, follow these steps to uninstall the Google App Engine:

Step 1: Press Windows Key + R  to activate the Run dialog . Type in » control panel » and press Enter .

Step 2: in the control panel, click on the option » Uninstall a program » under the heading of » Programs » «

Step 3: Now find “Google App Engine” from the list of programs, right click on it and select “Uninstall”.

Step 4: restart your computer.

3. Boot into safe mode and repair problems.

Booting into Safe Mode is a good and easy method to fix the Windows host process rundll32 high disk usage problem. Follow these steps to do so:

Step 1: First of all, start your PC in safe mode by pressing the F8 key while the system is booting. You can also get help from here if you have trouble starting in safe mode.

Step 2: After booting into Safe Mode, press Windows Key + R simultaneously to access the Run dialog . Type  “taskmgr” and press Enter .

Step 3: In Task Manager, check if CPU and disk usage is normal or abnormal .

Step 4: If disk usage is normal in safe mode, you need to clean boot and determine which application / service is causing the problem for you.


If the high disk usage problem still occurs in Safe Mode, it means that the problem is related to the operating system. So you need to continue with the steps below.

Step 5: Press Windows key + R simultaneously to access the Run dialog. Type in ” msconfig ” and press Enter .

Step 6: Now switch to the Services tab present at the top of the screen. Check  the box present on the line » Hide all Microsoft services «.

Step 7:   Then click the button » Disable all » present at the bottom left of the window and then click Apply .

Step 8: Now switch to the Startup tab and click » Open Task Manager. «

Step 9: In Task Manager, disable each service one by one.

Step 10: restart your computer. If the high disk usage problem still persists, it means that an external program was causing the problem. Review the installed programs, determine which application is causing conflicts, and remove them. You can also “Restore Windows from restore point” to repair problems.


These were the top 3 methods to fix Windows host process rundll32 high disk usage problem . You can also visit the official Microsoft thread related to this topic and seek further help. I also suggest that you use the Antivirus program and look for threats if you are still having trouble. For any questions, doubts or suggestions, do not hesitate to visit the Comments section . I hope I’ve helped. Have a nice day folks!

by Abdullah Sam
I’m a teacher, researcher and writer. I write about study subjects to improve the learning of college and university students. I write top Quality study notes Mostly, Tech, Games, Education, And Solutions/Tips and Tricks. I am a person who helps students to acquire knowledge, competence or virtue.

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