Microsoft Defender on Windows Server 2016/2019 creating multiple files

Microsoft’s anti-malware tool, Windows Defender, was released in 2006 and is now known as Microsoft Defender Antivirus.

It is a component of Windows operating systems, including Microsoft Windows 10, Windows Server 2016, and Windows Server 2019.

However, Windows Server 2016 and 2019 users recently faced an issue with the antivirus.

According to recent reports, Microsoft Defender Antivirus consumes storage space by creating multiple files.

Basically, the antivirus creates a lot of files as soon as the real-time protection feature is activated.

(Source 1, 2)

Although this issue affects Windows Server 2016 and 2019 users, it is not clear whether or not it is present on other editions of Windows as well.

This problem causes a lot of inconvenience to the users as a lot of storage is occupied due to it.

One user said that the problem could arise if there are multiple antivirus tools installed on the system. In this case, disabling Windows Defender fixes the said issue.


On the other hand, a Windows Defender engineer said this is a known issue that will be fixed soon.

Affected users might not have to face this issue for a long time as an update with said fix is ​​expected to be released by this Thursday i.e. May 6th.

We hope that Microsoft will release the patch on that date because users are running out of storage for no particular reason.


That said, we’ll continue to monitor this for further development and provide more details once new information becomes available.

In the meantime, you can check out our dedicated Microsoft section as there are more such stories out there.

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