windows-itpro-docs/windows/client-management/mdm/policy-csp-admx-mss-legacy.md
2022-11-29 10:52:01 -05:00

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ADMX_MSS-legacy Policy CSP Learn more about the ADMX_MSS-legacy Area in Policy CSP vinaypamnani-msft aaroncz vinpa 11/29/2022 medium windows-client itpro-manage reference

Policy CSP - ADMX_MSS-legacy

Tip

Some of these are ADMX-backed policies and require a special SyncML format to enable or disable. For details, see Understanding ADMX-backed policies.

You must specify the data type in the SyncML as <Format>chr</Format>. For an example SyncML, refer to Enabling a policy.

The payload of the SyncML must be XML-encoded; for this XML encoding, there are a variety of online encoders that you can use. To avoid encoding the payload, you can use CDATA if your MDM supports it. For more information, see CDATA Sections.

Pol_MSS_AutoAdminLogon

Scope Editions Applicable OS
✔️ Device
User
Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 2004 [10.0.19041.1202] and later
✔️ Windows 10, version 2009 [10.0.19042.1202] and later
✔️ Windows 10, version 21H1 [10.0.19043.1202] and later
✔️ Windows 11, version 21H2 [10.0.22000] and later
./Device/Vendor/MSFT/Policy/Config/ADMX_MSS-legacy/Pol_MSS_AutoAdminLogon

Enable Automatic Logon (not recommended).

Description framework properties:

Property name Property value
Format chr (string)
Access Type Add, Delete, Get, Replace

Pol_MSS_AutoReboot

Scope Editions Applicable OS
✔️ Device
User
Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 2004 [10.0.19041.1202] and later
✔️ Windows 10, version 2009 [10.0.19042.1202] and later
✔️ Windows 10, version 21H1 [10.0.19043.1202] and later
✔️ Windows 11, version 21H2 [10.0.22000] and later
./Device/Vendor/MSFT/Policy/Config/ADMX_MSS-legacy/Pol_MSS_AutoReboot

Allow Windows to automatically restart after a system crash (recommended except for highly secure environments).

Description framework properties:

Property name Property value
Format chr (string)
Access Type Add, Delete, Get, Replace

Pol_MSS_AutoShareServer

Scope Editions Applicable OS
✔️ Device
User
Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 2004 [10.0.19041.1202] and later
✔️ Windows 10, version 2009 [10.0.19042.1202] and later
✔️ Windows 10, version 21H1 [10.0.19043.1202] and later
✔️ Windows 11, version 21H2 [10.0.22000] and later
./Device/Vendor/MSFT/Policy/Config/ADMX_MSS-legacy/Pol_MSS_AutoShareServer

Enable administrative shares on servers (recommended except for highly secure environments).

Description framework properties:

Property name Property value
Format chr (string)
Access Type Add, Delete, Get, Replace

Pol_MSS_AutoShareWks

Scope Editions Applicable OS
✔️ Device
User
Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 2004 [10.0.19041.1202] and later
✔️ Windows 10, version 2009 [10.0.19042.1202] and later
✔️ Windows 10, version 21H1 [10.0.19043.1202] and later
✔️ Windows 11, version 21H2 [10.0.22000] and later
./Device/Vendor/MSFT/Policy/Config/ADMX_MSS-legacy/Pol_MSS_AutoShareWks

Enable administrative shares on workstations (recommended except for highly secure environments).

Description framework properties:

Property name Property value
Format chr (string)
Access Type Add, Delete, Get, Replace

Pol_MSS_DisableSavePassword

Scope Editions Applicable OS
✔️ Device
User
Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 2004 [10.0.19041.1202] and later
✔️ Windows 10, version 2009 [10.0.19042.1202] and later
✔️ Windows 10, version 21H1 [10.0.19043.1202] and later
✔️ Windows 11, version 21H2 [10.0.22000] and later
./Device/Vendor/MSFT/Policy/Config/ADMX_MSS-legacy/Pol_MSS_DisableSavePassword

Description framework properties:

Property name Property value
Format chr (string)
Access Type Add, Delete, Get, Replace

Prevent the dial-up password from being saved (recommended).

Pol_MSS_EnableDeadGWDetect

Scope Editions Applicable OS
✔️ Device
User
Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 2004 [10.0.19041.1202] and later
✔️ Windows 10, version 2009 [10.0.19042.1202] and later
✔️ Windows 10, version 21H1 [10.0.19043.1202] and later
✔️ Windows 11, version 21H2 [10.0.22000] and later
./Device/Vendor/MSFT/Policy/Config/ADMX_MSS-legacy/Pol_MSS_EnableDeadGWDetect

Allow automatic detection of dead network gateways (could lead to DoS).

Description framework properties:

Property name Property value
Format chr (string)
Access Type Add, Delete, Get, Replace

Pol_MSS_HideFromBrowseList

Scope Editions Applicable OS
✔️ Device
User
Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 2004 [10.0.19041.1202] and later
✔️ Windows 10, version 2009 [10.0.19042.1202] and later
✔️ Windows 10, version 21H1 [10.0.19043.1202] and later
✔️ Windows 11, version 21H2 [10.0.22000] and later
./Device/Vendor/MSFT/Policy/Config/ADMX_MSS-legacy/Pol_MSS_HideFromBrowseList

Hide Computer From the Browse List (not recommended except for highly secure environments).

Description framework properties:

Property name Property value
Format chr (string)
Access Type Add, Delete, Get, Replace

Pol_MSS_KeepAliveTime

Scope Editions Applicable OS
✔️ Device
User
Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 2004 [10.0.19041.1202] and later
✔️ Windows 10, version 2009 [10.0.19042.1202] and later
✔️ Windows 10, version 21H1 [10.0.19043.1202] and later
✔️ Windows 11, version 21H2 [10.0.22000] and later
./Device/Vendor/MSFT/Policy/Config/ADMX_MSS-legacy/Pol_MSS_KeepAliveTime

Define how often keep-alive packets are sent in milliseconds.

Description framework properties:

Property name Property value
Format chr (string)
Access Type Add, Delete, Get, Replace

Pol_MSS_NoDefaultExempt

Scope Editions Applicable OS
✔️ Device
User
Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 2004 [10.0.19041.1202] and later
✔️ Windows 10, version 2009 [10.0.19042.1202] and later
✔️ Windows 10, version 21H1 [10.0.19043.1202] and later
✔️ Windows 11, version 21H2 [10.0.22000] and later
./Device/Vendor/MSFT/Policy/Config/ADMX_MSS-legacy/Pol_MSS_NoDefaultExempt

Configure IPSec exemptions for various types of network traffic.

Description framework properties:

Property name Property value
Format chr (string)
Access Type Add, Delete, Get, Replace

Pol_MSS_NtfsDisable8dot3NameCreation

Scope Editions Applicable OS
✔️ Device
User
Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 2004 [10.0.19041.1202] and later
✔️ Windows 10, version 2009 [10.0.19042.1202] and later
✔️ Windows 10, version 21H1 [10.0.19043.1202] and later
✔️ Windows 11, version 21H2 [10.0.22000] and later
./Device/Vendor/MSFT/Policy/Config/ADMX_MSS-legacy/Pol_MSS_NtfsDisable8dot3NameCreation

Enable the computer to stop generating 8.3 style filenames.

Description framework properties:

Property name Property value
Format chr (string)
Access Type Add, Delete, Get, Replace

Pol_MSS_PerformRouterDiscovery

Scope Editions Applicable OS
✔️ Device
User
Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 2004 [10.0.19041.1202] and later
✔️ Windows 10, version 2009 [10.0.19042.1202] and later
✔️ Windows 10, version 21H1 [10.0.19043.1202] and later
✔️ Windows 11, version 21H2 [10.0.22000] and later
./Device/Vendor/MSFT/Policy/Config/ADMX_MSS-legacy/Pol_MSS_PerformRouterDiscovery

Allow IRDP to detect and configure Default Gateway addresses (could lead to DoS).

Description framework properties:

Property name Property value
Format chr (string)
Access Type Add, Delete, Get, Replace

Pol_MSS_SafeDllSearchMode

Scope Editions Applicable OS
✔️ Device
User
Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 2004 [10.0.19041.1202] and later
✔️ Windows 10, version 2009 [10.0.19042.1202] and later
✔️ Windows 10, version 21H1 [10.0.19043.1202] and later
✔️ Windows 11, version 21H2 [10.0.22000] and later
./Device/Vendor/MSFT/Policy/Config/ADMX_MSS-legacy/Pol_MSS_SafeDllSearchMode

Enable Safe DLL search mode (recommended).

Description framework properties:

Property name Property value
Format chr (string)
Access Type Add, Delete, Get, Replace

Pol_MSS_ScreenSaverGracePeriod

Scope Editions Applicable OS
✔️ Device
User
Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 2004 [10.0.19041.1202] and later
✔️ Windows 10, version 2009 [10.0.19042.1202] and later
✔️ Windows 10, version 21H1 [10.0.19043.1202] and later
✔️ Windows 11, version 21H2 [10.0.22000] and later
./Device/Vendor/MSFT/Policy/Config/ADMX_MSS-legacy/Pol_MSS_ScreenSaverGracePeriod

he time in seconds before the screen saver grace period expires (0 recommended).

Description framework properties:

Property name Property value
Format chr (string)
Access Type Add, Delete, Get, Replace

Pol_MSS_SynAttackProtect

Scope Editions Applicable OS
✔️ Device
User
Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 2004 [10.0.19041.1202] and later
✔️ Windows 10, version 2009 [10.0.19042.1202] and later
✔️ Windows 10, version 21H1 [10.0.19043.1202] and later
✔️ Windows 11, version 21H2 [10.0.22000] and later
./Device/Vendor/MSFT/Policy/Config/ADMX_MSS-legacy/Pol_MSS_SynAttackProtect

Syn attack protection level (protects against DoS).

Description framework properties:

Property name Property value
Format chr (string)
Access Type Add, Delete, Get, Replace

Pol_MSS_TcpMaxConnectResponseRetransmissions

Scope Editions Applicable OS
✔️ Device
User
Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 2004 [10.0.19041.1202] and later
✔️ Windows 10, version 2009 [10.0.19042.1202] and later
✔️ Windows 10, version 21H1 [10.0.19043.1202] and later
✔️ Windows 11, version 21H2 [10.0.22000] and later
./Device/Vendor/MSFT/Policy/Config/ADMX_MSS-legacy/Pol_MSS_TcpMaxConnectResponseRetransmissions

SYN-ACK retransmissions when a connection request is not acknowledged.

Description framework properties:

Property name Property value
Format chr (string)
Access Type Add, Delete, Get, Replace

Pol_MSS_TcpMaxDataRetransmissions

Scope Editions Applicable OS
✔️ Device
User
Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 2004 [10.0.19041.1202] and later
✔️ Windows 10, version 2009 [10.0.19042.1202] and later
✔️ Windows 10, version 21H1 [10.0.19043.1202] and later
✔️ Windows 11, version 21H2 [10.0.22000] and later
./Device/Vendor/MSFT/Policy/Config/ADMX_MSS-legacy/Pol_MSS_TcpMaxDataRetransmissions

Define how many times unacknowledged data is retransmitted (3 recommended, 5 is default).

Description framework properties:

Property name Property value
Format chr (string)
Access Type Add, Delete, Get, Replace

Pol_MSS_TcpMaxDataRetransmissionsIPv6

Scope Editions Applicable OS
✔️ Device
User
Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 2004 [10.0.19041.1202] and later
✔️ Windows 10, version 2009 [10.0.19042.1202] and later
✔️ Windows 10, version 21H1 [10.0.19043.1202] and later
✔️ Windows 11, version 21H2 [10.0.22000] and later
./Device/Vendor/MSFT/Policy/Config/ADMX_MSS-legacy/Pol_MSS_TcpMaxDataRetransmissionsIPv6

Define how many times unacknowledged data is retransmitted (3 recommended, 5 is default).

Description framework properties:

Property name Property value
Format chr (string)
Access Type Add, Delete, Get, Replace

Pol_MSS_WarningLevel

Scope Editions Applicable OS
✔️ Device
User
Home
✔️ Pro
✔️ Enterprise
✔️ Education
✔️ Windows SE
✔️ Windows 10, version 2004 [10.0.19041.1202] and later
✔️ Windows 10, version 2009 [10.0.19042.1202] and later
✔️ Windows 10, version 21H1 [10.0.19043.1202] and later
✔️ Windows 11, version 21H2 [10.0.22000] and later
./Device/Vendor/MSFT/Policy/Config/ADMX_MSS-legacy/Pol_MSS_WarningLevel

Percentage threshold for the security event log at which the system will generate a warning.

Description framework properties:

Property name Property value
Format chr (string)
Access Type Add, Delete, Get, Replace

Policy configuration service provider