Really not much to add other than I sometimes feel the need to remove the Windows Firewall from the equation when trying to troubleshoot a problem.

Launch a command prompt as the admin (right click, select run as administrator) and enter the following:

netsh advfirewall set AllProfiles state off

I work remotely through RDP more times than not and every once in a while, the bar at the top of the RDP session becomes unpinned.  It bugs me and no matter what I do, all of my connections moving forward open with the session unpinned. 

Here's where you can fix this issue:

HKEY_CURRENT_USER\Software\Microsoft\Terminal server Client
"PinConnectionBar"=dword:00000001

As shown above, the value should be changed from zero to one.

If you've stumbled across this page, you know what a dream the CDP appliance can be for a backup and restore solution.  You also might be aware of what a pain it can be when the appliance gives you an error while you're attempting to remove some data or delete an agent.

After several calls to Sonicwall support for the same issue, I was finally given the method they use for solving this problem.

First, you need to install Putty.  It's free, you can download it from:  http://www.putty.org/.