Policy

Define the maximum size of downloaded files and attachments to be scanned

Microsoft Windows

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Define the maximum size of downloaded files and attachments to be scanned
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Policy overview

Key metadata and intent for this policy.

Computer
Category
Windows Components > Microsoft Defender Antivirus > Real-time Protection
Supported on
At least Windows Server 2012, Windows 8 or Windows RT

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

This policy setting defines the maximum size (in kilobytes) of downloaded files and attachments that will be scanned. If you enable this setting, downloaded files and attachments smaller than the size specified will be scanned. If you disable or do not configure this setting, a default size will be applied.

Internal name
RealtimeProtection_IOAVMaxSize
Policy ID
cf5e60450191
Elements
1

Registry values

How enabled and disabled states update the registry.

No explicit registry values are set for enabled or disabled states.

Policy elements

Inputs and configuration options exposed by this policy.

ScopeElementTypeRegistry mappingConstraints & behaviorCopy
Computer
Define the maximum size of downloaded files and attachments to be scanned
ID RealtimeProtection_IOAVMaxSize
decimal
Path
Software\Policies\Microsoft\Windows Defender\Real-Time Protection
Value name
IOAVMaxSize
Type
REG_DWORD
Range: 0 to 10000000
Define the maximum size of downloaded files and attachments to be scanned
Computer · Type decimal
Registry mapping
Path
Software\Policies\Microsoft\Windows Defender\Real-Time Protection
Value name
IOAVMaxSize
Type
REG_DWORD
Details
Range: 0 to 10000000