Using Group Policy as described here is the supported method of updating the cipher suite priority ordering. Updating the registry settings for the default priority ordering isn't supported.

Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it.

Click Start, click Run, and then type gpedit.msc. Under Local Computer Policy, expand User Configuration, expand Administrative Templates, expand Desktop, and then click Active Desktop.

The Local Group Policy Editor is a Microsoft Management Console (MMC) snap-in that provides a single user interface through which all the settings of local group policy object can be managed.

When you try to open a Microsoft Management Console snap-in that involves security policies (such as Local Security Policy, Group Policy, or Domain Security Policy), the console may not open, and you may receive an error message similar to one of the following error messages:

Assume that you create a Wireless Group Policy Object (GPO) through Group Policy Management Console (GPMC) that runs on a site that does not contain a primary domain controller (PDC) in Windows 8.1, Windows Server 2012 R2, Windows 7, or Windows Server 2008 R2.

Fixes an issue in which you receive warning messages when you try to open gpedit.msc or secpol.msc. This issue occurs on a Windows Embedded 8 Standard-based computer that is configured to use Japanese as the primary language.

Fixes an issue in which an error occurs when you open gpedit.msc in Windows 7. This issue occurs because the system can't parse the Internet Explorer policy definition.

After you apply this hotfix, the Group Policy Object Editor snap-in and the rsop.msc utility can load settings that contain up to 4,096 characters. A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article.

Click Start, click Run, type gpedit.msc, and then click OK. In the left pane, expand User Configuration, expand Administrative Templates, and then click Start Menu and Taskbar.