Custom Classes: Deny write access
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Policy overview

Key metadata and intent for this policy.

Computer
Category
System > Removable Storage Access
Supported on
At least Windows Vista

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

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

Internal name
CustomClasses_DenyWrite_Access_2
Policy ID
86c7e0f47ed4
Elements
1

Registry values

How enabled and disabled states update the registry.

ScopeRegistry locationTypeEnabled valueDisabled valueCopy
Computer
Path
Software\Policies\Microsoft\Windows\RemovableStorageDevices\Custom\Deny_Write
Value name
Deny_Write
REG_DWORD
HKLM
1
HKLM
0
Registry location
Type REG_DWORD · Computer
Path
Software\Policies\Microsoft\Windows\RemovableStorageDevices\Custom\Deny_Write
Value name
Deny_Write
Hive
HKLM
Enabled value
1
Disabled value
0

Policy elements

Inputs and configuration options exposed by this policy.

ScopeElementTypeRegistry mappingConstraints & behaviorCopy
Computer
GUID for custom removable storage class:
ID CustomClasses_List
list
Path
Software\Policies\Microsoft\Windows\RemovableStorageDevices\Custom\Deny_Write\List
Value name
Deny_Write
Type
REG_MULTI_SZ
List: additive
GUID for custom removable storage class:
Computer · Type list
Registry mapping
Path
Software\Policies\Microsoft\Windows\RemovableStorageDevices\Custom\Deny_Write\List
Value name
Deny_Write
Type
REG_MULTI_SZ
Details
List: additive