Policy CSP - ADMX_CipherSuiteOrder

Tip

This CSP contains ADMX-backed policies which require a special SyncML format to enable or disable. You must specify the data type in the SyncML as <Format>chr</Format>. For details, see Understanding ADMX-backed policies.

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.

SSLCipherSuiteOrder

Scope Editions Applicable OS
✅ Device
❌ User
✅ Pro
✅ Enterprise
✅ Education
✅ Windows SE
✅ IoT Enterprise / IoT Enterprise LTSC
✅ Windows 10, version 2004 with KB5005101 [10.0.19041.1202] and later
✅ Windows 10, version 20H2 with KB5005101 [10.0.19042.1202] and later
✅ Windows 10, version 21H1 with KB5005101 [10.0.19043.1202] and later
✅ Windows 11, version 21H2 [10.0.22000] and later
./Device/Vendor/MSFT/Policy/Config/ADMX_CipherSuiteOrder/SSLCipherSuiteOrder

This policy setting determines the cipher suites used by the Secure Socket Layer (SSL).

  • If you enable this policy setting, SSL cipher suites are prioritized in the order specified.

  • If you disable or don't configure this policy setting, default cipher suite order is used.

Link for all the cipherSuites: https://go.microsoft.com/fwlink/?LinkId=517265

Description framework properties:

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

Tip

This is an ADMX-backed policy and requires SyncML format for configuration. For an example of SyncML format, refer to Enabling a policy.

ADMX mapping:

Name Value
Name SSLCipherSuiteOrder
Friendly Name SSL Cipher Suite Order
Location Computer Configuration
Path Network > SSL Configuration Settings
Registry Key Name SOFTWARE\Policies\Microsoft\Cryptography\Configuration\SSL\00010002
ADMX File Name CipherSuiteOrder.admx

SSLCurveOrder

Scope Editions Applicable OS
✅ Device
❌ User
✅ Pro
✅ Enterprise
✅ Education
✅ Windows SE
✅ IoT Enterprise / IoT Enterprise LTSC
✅ Windows 10, version 2004 with KB5005101 [10.0.19041.1202] and later
✅ Windows 10, version 20H2 with KB5005101 [10.0.19042.1202] and later
✅ Windows 10, version 21H1 with KB5005101 [10.0.19043.1202] and later
✅ Windows 11, version 21H2 [10.0.22000] and later
./Device/Vendor/MSFT/Policy/Config/ADMX_CipherSuiteOrder/SSLCurveOrder

This policy setting determines the priority order of ECC curves used with ECDHE cipher suites.

  • If you enable this policy setting, ECC curves are prioritized in the order specified.(Enter one Curve name per line)

  • If you disable or don't configure this policy setting, the default ECC curve order is used.

Default Curve Order

curve25519 NistP256 NistP384

To See all the curves supported on the system, Use the following command:

CertUtil.exe -DisplayEccCurve.

Description framework properties:

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

Tip

This is an ADMX-backed policy and requires SyncML format for configuration. For an example of SyncML format, refer to Enabling a policy.

ADMX mapping:

Name Value
Name SSLCurveOrder
Friendly Name ECC Curve Order
Location Computer Configuration
Path Network > SSL Configuration Settings
Registry Key Name SOFTWARE\Policies\Microsoft\Cryptography\Configuration\SSL\00010002
ADMX File Name CipherSuiteOrder.admx

Policy configuration service provider