Policy
Specify the maximum size of archive files to be scanned
Windows 11 25H2
Policy overview
Key metadata and intent for this policy.
Supported OS tags: Windows10, Windows10RT, Windows11, Windows8, Windows81, WindowsRT, WindowsRT81, WindowsServer2012, WindowsServer2012R2, WindowsServer2016
This policy setting allows you to configure the maximum size of archive files such as .ZIP or .CAB that will be scanned. The value represents file size in kilobytes (KB). The default value is 0 and represents no limit to archive size for scanning. If you enable this setting, archive files less than or equal to the size specified will be scanned. If you disable or do not configure this setting, archive files will be scanned according to the default value.
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.
| Element | Type | Registry mapping | Constraints & behavior |
|---|---|---|---|
Specify the maximum size of archive files to be scanned ID Scan_ArchiveMaxSize | decimal | HKLM\Software\Policies\Microsoft\Windows Defender\Scan\ArchiveMaxSize Type REG_DWORD | Range: 0 to 4294967295 |
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