Policy

Custom Classes: Deny read access

Windows 11 25H2

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Policy overview

Key metadata and intent for this policy.

ClassComputer
CategorySystem > Removable Storage Access
Supported onAt least Windows Vista

Supported OS tags: Windows10, Windows10RT, Windows11, Windows7, Windows8, Windows81, WindowsRT, WindowsRT81, WindowsServer2008, WindowsServer2012, WindowsServer2012R2, WindowsServer2016, WindowsVista

This policy setting denies read access to custom removable storage classes. If you enable this policy setting, read access is denied to these removable storage classes. If you disable or do not configure this policy setting, read access is allowed to these removable storage classes.

Internal name
CustomClasses_DenyRead_Access_2
Policy ID
69fcc63919e9
Elements
1

Registry values

How enabled and disabled states update the registry.

Registry locationTypeEnabled valueDisabled value
HKLM\Software\Policies\Microsoft\Windows\RemovableStorageDevices\Custom\Deny_Read\Deny_ReadREG_DWORD
1
0

Policy elements

Inputs and configuration options exposed by this policy.

ElementTypeRegistry mappingConstraints & behavior
GUID for custom removable storage class:
ID CustomClasses_List
list
HKLM\Software\Policies\Microsoft\Windows\RemovableStorageDevices\Custom\Deny_Read\List\Deny_Read
Type REG_MULTI_SZ
List: additive

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