A number of Windows users have complained of their respective antivirus programs detecting, flagging and blocking a spyware file named “PUA_BROWSEFOX” immediately after they downloaded a copy of the Windows 10 ISO file to their computer. The Windows 10 ISO file is basically the setup for Windows 10 – the medium that can be used to install Windows 10 on any computer.
The PUA_BROWSEFOX file is the farthest thing from a part of the standard Windows 10 ISO file as it could possibly be. This file is, in fact, a known virus – a form of spyware. Since more than a few users have complained of this issue, the PUA_BROWSEFOX file showing up right after a Windows 10 ISO file download cannot be ruled out as a coincidence. The cause of this problem can either be a corrupted or damaged system file, an actual virus infection or an anomaly with the Windows 10 ISO file download. Thankfully, if you are facing this problem, the following are some of the most effective methods that you can use to try and fix it:
Method 1: Perform an SFC Scan
An SFC scan will check for any damaged or corrupted system files and repair any that are found.
Right-click on the Start Menu button to open the WinX Menu.
In the WinX Menu, click on Command Prompt (Admin) to open an elevated Command Prompt.
Type sfc /scannow into the Command Prompt and press the Enter
Wait for the SFC scan to be completed. This may take some time.
Once the SFC scan has been completed, the names of any and all corrupted or damaged system files will be displayed and you will be informed that they have been fixed.
Method 2: Run a full system scan for viruses with the Microsoft Safety Scanner
The Microsoft Safety Scanner is a tool designed specifically to scan systems for any safety breaches and virus infections and eliminate any and all threats that are found.
Download the Microsoft Safety Scanner from here.
Open the Microsoft Safety Scanner.
Follow the onscreen instructions to scan your entire computer for viruses and threats.
If any viruses, malware or spyware are found, eliminate them with the help of the Microsoft Safety Scanner.
Method 3: Delete and then re-download the Windows 10 ISO file
If none of the methods above seem to work for you, the only option you have left is to delete all traces of the Windows 10 ISO file from your computer, thus getting rid of the PUA_BROWSEFOX file, and then re-download it through the Windows 10 Media Creation Tool. A fresh re-download of the ISO file has more than significant chances of not bringing the PUA_BROWSEFOX spyware file with it.
Navigate to the Windows 10 ISO file on your computer, right-click on it and click on Delete.
Empty the Recycle Bin to make sure that all traces of the Windows 10 ISO file are eliminated.
Download the Windows 10 Media Creation Tool from here.
Run the Media Creation Tool.
Click on Create installation media for another PC.
Select the language, edition and CPU architecture (32-bit or 64-bit) that you desire.
Choose to save the media to an ISO file.
Download the ISO file to your computer. Hopefully, this time it will not bring the PUA_BROWSEFOX spyware file with it.