Do not preserve zone information in file attachments

Policy ID
AM_MarkZoneOnSavedAtttachments
Scope
User Configuration
Supported on
At least Windows XP Professional with SP2
Source
Administrative Templates (.admx) for Windows 11 2026 Update (26H2) (version 1.0)
Category
Windows Components › Attachment Manager

Description

This policy setting allows you to manage whether Windows marks file attachments with information about their zone of origin (such as restricted, Internet, intranet, local). This requires NTFS in order to function correctly, and will fail without notice on FAT32. By not preserving the zone information, Windows cannot make proper risk assessments.

If you enable this policy setting, Windows does not mark file attachments with their zone information.

If you disable this policy setting, Windows marks file attachments with their zone information.

If you do not configure this policy setting, Windows marks file attachments with their zone information.

Registry

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