Enable Credential Security Service Provider

Specifies whether the View desktop connection uses Network Level Authentication (NLA). In Windows Vista, remote desktop connections require NLA by default.

If the guest operating system requires NLA for remote desktop connections, you must enable this setting or View Client will not be able to connect to the View desktop.

In addition to enabling this setting, you must also verify that the following conditions are met:
1) Both the client and guest operating systems support NLA.
2) Direct client connections are enabled for the View Connection Server instance. Tunneled connections are not supported with NLA.

Supported on: VMware View Client
Registry HiveHKEY_CURRENT_USER
Registry PathSoftware\Policies\VMware, Inc.\VMware VDM\Client\RDP Settings
Value NameEnableCredSspSupport
Value TypeREG_DWORD
Enabled Value1
Disabled Value0

vdm_client.admx

Administrative Templates (Computers)

Administrative Templates (Users)