The MK Protocol Security Restriction policy setting reduces attack surface area by preventing the MK protocol. Resources hosted on the MK protocol will fail.
If you enable this policy setting, the MK Protocol is prevented for Windows Explorer and Internet Explorer, and resources hosted on the MK protocol will fail.
If you disable this policy setting, applications can use the MK protocol API. Resources hosted on the MK protocol will work for the Windows Explorer and Internet Explorer processes.
If you do not configure this policy setting, the MK Protocol is prevented for Windows Explorer and Internet Explorer, and resources hosted on the MK protocol will fail.
| Registry Path | Value Name | Value Type | Value |
|---|---|---|---|
| Software\Policies\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_DISABLE_MK_PROTOCOL | (Reserved) | REG_SZ | 1 |
| Software\Policies\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_DISABLE_MK_PROTOCOL | explorer.exe | REG_SZ | 1 |
| Software\Policies\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_DISABLE_MK_PROTOCOL | iexplore.exe | REG_SZ | 1 |
| Registry Hive | Registry Path | Value Name | Value Type | Value |
|---|---|---|---|---|
| HKEY_CURRENT_USER | Software\Policies\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_DISABLE_MK_PROTOCOL | (Reserved) | REG_SZ | 0 |
| HKEY_CURRENT_USER | Software\Policies\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_DISABLE_MK_PROTOCOL | explorer.exe | REG_SZ | 0 |
| HKEY_CURRENT_USER | Software\Policies\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_DISABLE_MK_PROTOCOL | iexplore.exe | REG_SZ | 0 |