Why am I unable to connect using remote Desktop to a Windows Server 2008 based system after installing the Symantec Endpoint Protection client with the NTP component? Additionally, why do I get the following data encryption related error during the initial phase of the RDP session?
> Because of an error in data encryption, this session will end. Please try connecting to the remote computer again
The following error pop-up may be encountered with a black background window -
Additionally, if the Server logon windows appears, you may be unable to select any user account to logon and the session will exit with the above mentioned error pop-up.
This error occurs due to a setting in Windows Server 2008, and is not related directly to the Firewall (NTP) component being enabled. Though this issue may occur after installing the NTP component, it does not relate to the NTP component being responsible.
Symantec requests that you upgrade to Symantec Endpoint Protection 11 Release Update 7 (RU7). Additional changes to the firewall driver have been implemented to increase compatibility with certain network interface cards. If you are unable to upgrade please see the following work around below. For information on how to obtain the latest build of Symantec Endpoint Protection, read TECH 103088: Obtaining an upgrade or update for Symantec Endpoint Protection or Symantec Network Access Control
To resolve this issue, please perform the following troubleshooting steps - (Please note that these steps have been provided AS IS, without any express or implied liabilities by Symantec or any affiliates, and as this issue lies with the Operating system, the exact RCA lies beyond the scope of Symantec Support / Symantec)