GPO tool

Group Policy made searchable

A free ADMX browser or comparison tool for IT administrators. Search policies, find registry keys, and see exactly what each setting writes to the Windows Registry. Or compare two GPO backups to see exactly what has changed between them.

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ECC Curve Order

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 do not 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

Registry Information

VendorMicrosoft
ProductCipher Suite Order
CategorySSL Configuration Settings
Applies toComputer Configuration
Supported onWindows 10 0
Registry Key[HKLM]SOFTWAREPoliciesMicrosoftCryptographyConfigurationSSL0010002

Policy Settings

ECC Curve Order:

Registry Key[HKLM]SOFTWAREPoliciesMicrosoftCryptographyConfigurationSSL0010002
Value NameEccCurves
TypeREG_MULTI_SZ