When using Windows Subsystem for Linux 2, we access our Linux file system using Windows Explorer. When we copying and pasting files, might notice addition files like 'xxx Zone.Identifier'.

The 'Zone.Identifier' file is a Windows Attachment Manager feature that stores security information about files. However, since WSL2 uses an ext4 file system, Windows cannot store ADS natively. Instead, it creates a visible 'Zone.Identifier' file in the same directory.

1. Delete Existing Files

If you already have 'Zone.Identifier' files in your WSL2 directories, use one of the following methods to remove them.

find ~/[Your Path] -name "*:Zone.Identifier" -delete

2. Disable Windows from Generating 'Zone.Identifier'

If you frequently access WSL2 files from Windows and want to permanently stop Windows from attaching 'Zone.Identifier', you can disable this feature via Group Policy or Registry Editor.

Press Win + R, type gpedit.msc, and hit Enter.

Configuration → Administrative Templates → Windows Components → Attachment Manager
User Configuration→ Administrative Templates→ Windows Components→ Attachment Manager(In Chinese)

EnableDo not preserve zone information in file attachments”