What is dcfwinservice in windows 11

Last Updated: Jan 21, 2024 by

If you’ve recently upgraded to Windows 11, you may have noticed a new process running in the background called “dcfwinservice.” This process may be unfamiliar to you and you may be wondering what it is and why it’s running on your computer. In this article, we’ll explore what dcfwinservice is and why it may be causing high CPU and disk usage.

What is dcfwinservice?

Dcfwinservice is a process that is part of the Windows Defender Firewall in Windows 11. It is responsible for managing the firewall settings and protecting your computer from potential threats. This service is essential for the security of your computer and should not be disabled.

Why is dcfwinservice causing high CPU and disk usage?

While dcfwinservice is an important process for your computer’s security, it can sometimes cause high CPU and disk usage. This can be due to a number of reasons, including outdated drivers, conflicting software, or malware. If you notice that dcfwinservice is using a high amount of CPU or disk, it’s important to troubleshoot the issue to prevent any potential performance issues.

How to fix dcfwinservice high CPU and disk usage

There are a few steps you can take to fix dcfwinservice high CPU and disk usage. Here are some potential solutions:

Update your drivers

Outdated drivers can cause conflicts and lead to high CPU and disk usage. Make sure to regularly check for updates for your drivers, especially for your network and graphics drivers.

Run a malware scan

Malware can also cause high CPU and disk usage, so it’s important to run a full system scan with your antivirus software. If you don’t have an antivirus program, you can use the built-in Windows Defender or download a reputable antivirus program.

Check for conflicting software

Sometimes, other security software or firewalls can conflict with dcfwinservice and cause high CPU and disk usage. Make sure to only have one firewall or security program running at a time.

Restart the dcfwinservice process

If the issue persists, you can try restarting the dcfwinservice process. To do this, open the Task Manager by pressing Ctrl + Shift + Esc, find the dcfwinservice process, and click on “End task.” The process will automatically restart and hopefully, the high CPU and disk usage will be resolved.


Dcfwinservice is an important process for the security of your computer, but it can sometimes cause high CPU and disk usage. By following the steps outlined in this article, you can troubleshoot and fix any issues with dcfwinservice and ensure that your computer is running smoothly. If the issue persists, it’s always a good idea to seek help from a professional or contact Microsoft support for further assistance.

Have you experienced high CPU or disk usage due to dcfwinservice? Let us know in the comments.

Gulrukh Ch

About the Author: Gulrukh Ch

Gulrukh Chaudhary, an accomplished digital marketer and technology writer with a passion for exploring the frontiers of innovation. Armed with a Master's degree in Information Technology, Gulrukh seamlessly blends her technical prowess with her creative flair, resulting in captivating insights into the world of emerging technologies. Discover more about her on her LinkedIn profile.

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