Troubleshooting : Troubleshoot RDP Connection Problems

Troubleshoot RDP Connection Problems
Generally, RDP settings should have been correctly set during DVM Template creation; as such, a user should not experience any problems in logging on to a DVM using RDP. The most common reasons for not being able to RDP to a DVM are as follows:
RDP not enabled
Enable RDP protocol on the virtual machine as outlined in (RDP Connections Only) Enable Remote Desktop and Set Remote Desktop Users.
AD groups doesn’t have permissions
Select an AD user group that has permissions to connect to this DVM using RDP. Verify that the Group Policy does not disallow RDP. Make sure that the user has a UPN (User@Company.com) in Active Directory.
Firewall prevents communication
Ensure that there is no Windows firewall rules that prevent the Pano device from communicating with the Pano DAS running on every DVM. Go to Configure DVM Firewall. Some organizations have a policy to enable the Windows firewall and many do not have this policy. You can troubleshooting, by temporarily disabling the firewall.
RDP not listening on the correct port
Ensure that RDP runs on default port 3389.
Incomplete UPN
Check to verify that the user has a complete UPN (User@Company.com) defined within Active Directory or your alternate user authentication service. For more information, go to No Privileges or No UPN Format.
Data encryption error
If you try to connect to a DVM using RDP, you might receive a data encryption error. This problem is caused by a known issue (KB323497) in Windows XP. To fix this problem, do the following:
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Locate and click the HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\TermService\Parameters registry subkey.
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