Policy

Specifies whether SharedArrayBuffers can be used in a non cross-origin-isolated context

Microsoft Edge

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Specifies whether SharedArrayBuffers can be used in a non cross-origin-isolated context
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Policy overview

Key metadata and intent for this policy.

Category
Microsoft Edge
Supported on
Microsoft Edge version 92, Windows 7 or later

Supported OS tags: Windows7

Specifies whether SharedArrayBuffers can be used in a non-cross-origin-isolated context. A SharedArrayBuffer is a binary data buffer that's used to create views on shared memory. SharedArrayBuffers have a memory access vulnerability in several popular CPUs. If you enable this policy, sites are allowed to use SharedArrayBuffers with no restrictions. If you disable or don't configure this policy, sites are allowed to use SharedArrayBuffers only when cross-origin isolated. Microsoft Edge requires cross-origin isolation when using SharedArrayBuffers from Microsoft Edge version 91 onward for Web Compatibility reasons.

Internal name
SharedArrayBufferUnrestrictedAccessAllowed
Policy ID
33c0f92f0af1
Elements
0

Registry values

How enabled and disabled states update the registry.

ScopeRegistry locationTypeEnabled valueDisabled valueCopy
Path
Software\Policies\Microsoft\Edge
Value name
SharedArrayBufferUnrestrictedAccessAllowed
REG_DWORD
HKLM
1
HKCU
1
HKLM
0
HKCU
0
Registry location
Type REG_DWORD · Both
Path
Software\Policies\Microsoft\Edge
Value name
SharedArrayBufferUnrestrictedAccessAllowed
Hive
HKLM
Enabled value
1
Disabled value
0
Hive
HKCU
Enabled value
1
Disabled value
0

Policy elements

Inputs and configuration options exposed by this policy.

This policy has no additional user input fields.