Setting Machine-Wide Default Authentication Level

The authentication level is used to tell COM at what level you want the client to be authenticated. These levels offer various levels of protection, from no protection to full encryption. To enable security for a machine, you need to choose an authentication level other than None. You can choose such a setting using Dcomcnfg.exe by completing the following steps.

    To set the authentication level on a machine-wide basis:

1. Run Dcomcnfg.exe.
2. Choose the Default Properties tab.
3. From the Default Authentication Level list box, choose a value other than (None).
4. If you will be setting more properties for the machine, click the Apply button to apply the new authentication level. Otherwise, click OK to apply the changes and exit Dcomcnfg.exe.