Policy
Process List
Windows 11 25H2
Policy overview
Key metadata and intent for this policy.
Supported OS tags: Windows10, Windows10RT, Windows11, Windows7, Windows8, Windows81, WindowsRT, WindowsRT81, WindowsServer2003, WindowsServer2008, WindowsServer2012, WindowsServer2012R2, WindowsServer2016, WindowsVista, WindowsXP
The MK Protocol Security Restriction policy setting reduces attack surface area by preventing the MK protocol. Resources hosted on the MK protocol will fail. This policy setting allows administrators to define applications for which they want this security feature to be prevented or allowed. If you enable this policy setting and enter a Value of 1, use of the MK protocol is prevented. If you enter a Value of 0, use of the MK protocol is allowed. If a Value Name is empty or the Value is not 0 or 1, the policy setting is ignored. Do not enter the Internet Explorer processes in this list: use the related Internet Explorer Processes policy to enable or disable IE processes. If the All Processes policy setting is enabled, the processes configured in this box take precedence over that setting. If you disable or do not configure this policy setting, the policy setting is ignored.
Registry values
How enabled and disabled states update the registry.
| Registry location | Type | Enabled value | Disabled value |
|---|---|---|---|
| HKCU\Software\Policies\Microsoft\Internet Explorer\Main\FeatureControl\ListBox_Support_FEATURE_DISABLE_MK_PROTOCOL | REG_DWORD | 1 | 0 |
Policy elements
Inputs and configuration options exposed by this policy.
| Element | Type | Registry mapping | Constraints & behavior |
|---|---|---|---|
Process List: ID IESF_PartnameProcessList | list | HKCU\Software\Policies\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_DISABLE_MK_PROTOCOL\ListBox_Support_FEATURE_DISABLE_MK_PROTOCOL Type REG_MULTI_SZ | List: additive, explicit value |
Other policies in this category
Explore related policies at the same level.
- UserAll ProcessesAt least Internet Explorer 6.0 in Windows XP with Service Pack 2 or Windows Server 2003 with Service Pack 1
- ComputerAll ProcessesAt least Internet Explorer 6.0 in Windows XP with Service Pack 2 or Windows Server 2003 with Service Pack 1
- ComputerInternet Explorer ProcessesAt least Internet Explorer 6.0 in Windows XP with Service Pack 2 or Windows Server 2003 with Service Pack 1
- UserInternet Explorer ProcessesAt least Internet Explorer 6.0 in Windows XP with Service Pack 2 or Windows Server 2003 with Service Pack 1
- ComputerProcess ListAt least Internet Explorer 6.0 in Windows XP with Service Pack 2 or Windows Server 2003 with Service Pack 1