Windows Defender Keeps Identifying The Same PUP Error – How To Solve in 2 Methods

Windows Defender PUP Error

Some Windows users have reported a perpetual error of Windows Defender. It goes on and on displaying a pop-up with a notification sound that warns the user that a PUP was identified on the system.

Then, the details of the error typically read that the item was quarantined and removed. Still, the system displays the same pop-up minutes later.

However, there is a way you can fix that!

Cause Of The Error

The Windows operating system has a built-in real-time antivirus software that was introduced with Windows 10, known as Windows Defender. However, the software isn’t exactly new, as it was previously featured on Windows 7 in the form of Microsoft Security Essentials. It was separately downloadable but wasn’t exactly a strong rival against popular AV brands.

Windows Defender gained the reputation of a not-so-good performer among the community due to its predecessor’s inferior performance.

It wasn’t seen as a decent choice for an antivirus back at the AV-Test of 2013. That is when it all started changing.

Microsoft started putting a lot of effort into making its antivirus decent. They did an outstanding job since Windows Defender managed to rank it as one of the company’s top services.

Speed is one of the most impressive features of Windows Defender. It’s so fast thanks to the fact that it’s built into the operating system, which means it can run in the background without using too many resources, which results in good operating system performance.

Though some users argue that Windows Defender is far from good, the numbers speak from themselves.

Fixing The Issue

This is how to fix the annoying Windows Defender error:

Method One implies clearing the software’s history. The threat you keep getting informed about might be present in Windows Defender’s history only.

  • Therefore, it would be good to remove the entries in the history of Windows Defender.
  • To do that, press the Windows key and R simultaneously. That will open the Run dialog.
  • Copy and paste the following code in the text box of the Run dialog and then hit Enter:
  • C:\\ProgramData\\Microsoft\\Windows Defender\\Scans\\History
  • Right-click the Service folder in the newly opened location and then click on Delete.
  • You can now close the Windows file explorer.
  • Press the Windows key and I simultaneously and go to Windows Security.
  • Click on Virus and Threat Protection and then Manage settings.
  • Slide the toggle to the off position and then turn it back on.

Alternative

  • If that does not work, you can delete the history with the help of the Event Viewer.
  • Press the Windows key and R simultaneously to open the Run dialog box.
  • Type eventvwr and then press enter.
  • You will see an Applications and Services log on the left side. Expand it.
  • Look for the Microsoft option and double click it.
  • Clicking on Windows will open the list of files. Navigate to Windows Defender.
  • Right-click on the Windows Defender option and then click on Open.
  • Right-click on Operational and then select Open to see all logs.
  • Under the Windows Defender folder (left side) right-click Operational.
  • Click on Clear Log.
  • Click Clear or Save and Clear to confirm the operation.

Second Alternative

The issue might be provoked by some browser-powred content, which is why you should try to clear the browser’s cache. To do that, follow these steps:

  • Open the web browser (Google Chrome tutorial).
  • Click on the three vertical dots located at the top-right corner of the page.
  • Open Settings -> Advanced.
  • Click on Privacy and security.
  • Click Clear browsing data or history.
  • From history, select Clear browsing data or More tools.
  • Click Clear browsing data.

You should now stop experiencing the same error.

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