All Processes
- Policy ID
- IESF_PolicyAllProcesses_6
- Scope
- Computer Configuration, User Configuration
- Supported on
- At least Internet Explorer 6.0 in Windows XP with Service Pack 2 or Windows Server 2003 with Service Pack 1
- Source
- Administrative Templates (.admx) for Windows 11 2026 Update (26H2) (version 1.0)
- Category
- Windows Components › Internet Explorer › Security Features › Mime Sniffing Safety Feature
Description
This policy setting determines whether Internet Explorer MIME sniffing will prevent promotion of a file of one type to a more dangerous file type.
If you enable this policy setting, the Mime Sniffing Safety Feature is enabled for all processes.
If you disable or do not configure this policy setting, the Mime Sniffing Safety Feature is disabled for all processes.
Registry
ComputerHKEY_LOCAL_MACHINE
HKLM\Software\Policies\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_MIME_SNIFFING View registry values
- *REG_SZ
UserHKEY_CURRENT_USER
HKCU\Software\Policies\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_MIME_SNIFFING View registry values
- *REG_SZ