[Easy Fixes!] Windows Defender Error Code 0x80016CFA - MiniTool

Some Windows users reported that an error message pops up constantly with error code 0x80016CFA when browsing some webpages. It informs that Windows Defender detects some errors and you can fix this issue by contacting the phone number or accessing the webpage in the error message. If you also see the same error, just ignore it and follow the solutions in this post from MiniTool Website.

Windows Defender Error Code 0x80016CFA

Windows Defender error code 0x80016CFA is a tech-support alert that usually pops up while browsing webpages on browsers like Opera, Chrome, Edge, and more. It is not an actual error message, so you shouldn’t believe any information listed in it.

If you receive this error code consistently, the reasons might be:

• Installation of problematic applications or programs
• Visiting unreliable websites or downloading items from unreliable sources
• Infection with malware

Now, you can follow the solution list below to find the most effective method to remove 0x80016CFA Microsoft Defender error!

How to Fix Windows Defender Error Code 0x80016CFA?

Fix 1: End the Process

The easiest solution to remove fake error message 0x80016CFA is to terminate all the tasks via Task Manager. To do so:

Step 1. Right-click on the taskbar and select Task Manager.

Step 2. Under the Processes tab, right-click on the related process and choose End task.

Fix 2: Uninstall Unwanted Software and Browser Extensions

If Windows Defender error code 0x80016CFA is caused by the installation of malicious programs or extensions. You should remove it immediately. Here’s how to do it:

Move 1: Uninstall Unwanted Programs

Step 1. Press Win R to open the Run box.

Step 2. Type appwiz.cpl and hit Enter to launch Programs and Features.

Step 3. In the app list, find the newly installed or suspicious programs, hit it and choose Uninstall.

Move 2: Remove Unnecessary Extensions

On Google Chrome

Step 1. Launch your browser.

Step 2. Click on the three-dot icon and choose Extensions > Manage Extensions.

Step 3. Toggle off the problematic extension and hit Remove.

Fix 3: Clear Cache

Corrupted caches in your browser might also lead to some problems like Windows Defender error code 0x80016CFA. You can follow these steps to clear them to check for any improvement.

Step 1. Launch your browser and click on three-dot icon to choose Settings.

Step 2. Under Privacy and security, click on Clear browsing data.

Step 3. Select the time range > tick the items you want to clean > hit Clear data to start the process.

Fix 4: Reset Browser

Another approach is to reset your browser settings to their default state, which will cancel some big changes in the browser. To do so:

Step 1. Open the settings of Google Chrome.

Step 2. Under Reset settings, hit Restore settings to their original defaults.

Step 3. Click on Reset settings to confirm the action.

Fix 5: Scan for Malware

The malware can be a culprit of the fake error message 0x80016CFA. In this case, performing a full scan of your computer can help to detect and remove this error.

Step 1. Press Win I to launch Windows Settings.

Step 2. Go to Update & Security > Windows Security > Virus & threat protection.

Step 3. Click on Scan options > tick Full scan > hit Scan now to start the scanning.

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