How to Check If Windows Defender Generates Random Files and

This practical guide walks through how to check if Windows defender generates random files and, explains the main requirements, and highlights common issues that may appear along the way.

Microsoft Defender comes pre-installed on all versions of Windows 10 and is regularly updated through Windows Update. After the Windows Defender update in late April, many users noticed there were thousands of files in the system drive, showing up in the folder C: ProgramDataMicrosoftWindows DefenderScansHistoryStore.

The bug is also attacking Windows Server installations where some users report that it has generated 18 million files in their organization.

'We have three 2016 servers affected so far. The hard drive capacity warning started showing up last night. One server has 18 million files in the Store folder. Another machine has 13 million files. It took us hours just to find files and delete them. Due to size allocation, these files are taking up 50-60GB of disk space. This is a big bug from Microsoft ', one user shared on Reddit.

How to check if Windows Defender is creating file or not

The easiest way to check if Windows Defender has an error is through File Explorer:

Step 1. Open File Explorer and make sure "hidden items" are enabled on the View tab

Step 2. In the address bar, type C: ProgramData Microsoft

Step 3. Select Windows Defender

Step 4. Select Continue if the folder requires administrator privileges

Step 5. In the Windows Defender folder, navigate to Scans HistoryScans

If affected, you will see hundreds or thousands of files less than one MB per file. You can safely delete the files in the folder.

How to fix

The issue seems to have been fixed using Windows Defender engine 1.1.18100.6.

Step 1. Open Start Menu and select Settings gear icon. In the Settings app, navigate to Updates & Security -> Windows Update and tap check for updates.

Step 2. The new update is titled 'Security Intelligence Update for Microsoft Defender Antivirus' and will be downloaded and installed automatically.

Step 3. You can verify the security tool's version number by opening the About page in the Windows Defender app

Key Takeaways

Use the information above as a practical reference for how to check if Windows defender generates random files and. Review each step carefully, confirm any requirements, and choose the option that best fits your situation.

FAQ

What does this guide explain about Check If Windows Defender Generates Random Files and?

It explains the main concepts, practical considerations, and useful steps related to check if Windows defender generates random files and without requiring advanced knowledge.

Who can benefit from learning about Check If Windows Defender Generates Random Files and?

This information is useful for readers who want a clear overview, practical guidance, and reliable steps related to check if Windows defender generates random files and.

What should I check before applying this information?

Review the requirements, confirm that your device, software, or situation matches the instructions, and back up important data before making major changes.