Try this...
Click Start, and then click Control Panel.
If you are using Classic view in Control Panel, double-click Administrative Tools, and then double-click Local Security Policy.
If you are using Category view in Control Panel, click Performance and Maintenance, click Administrative Tools, and then double-click Local Security Policy.
Under the Local Policies\Security Options node, double-click the Domain Member:Digitally encrypt or sign secure channel data (always) policy to open it.
Click Disabled, and then click OK.