I am using Dell PowerEdge 2950 with NetXtreme II NIC with Windows Server 2008 (not R2). It was working perfectly. I enabled RemoetApp, created RDP, also enabled Remote Desktop to allow our users to connect from anywhere. Good thing is it is still in testing environment. I didn’t have any security software installed on it so I proceeded to install whatever I had available to me which was Symantec EndPoint 64 bit edition for Windows Server 2008.
Sure enough like any other installation, the installation process went well. I ran live update with no hitch. Then it asked me to reboot. After that, I started to get the following error:
“Because of an error in data encryption, this session will end. Please try connecting to the remote computer again.” – Just like the screen shot below.

Encryption Error after installing Symantec EndPoint on Windows Server 2008

As soon as you press ok, it just closes the program. I tried it with RemoteApps, Remote Desktops and also using the RDP clients I created for each program. Trying to locate information, I came across many useful hints but mostly about Windows Server 2003.
I tried to change registry keys but none of them worked for me. If you want to try those solutions go ahead but please know that it may inadvertently cause some other issues. Then I found another solution that I wanted to try which basically talks about “Large Send Offload on IPv4.” This was a unique solution because I thought it was brilliant. So I followed the following steps:
1. Went to the server room (because I can’t connect remotely even as administrator)
2. Logged onto the Server.
3. Then find your active “Local Area Connection Status” window.
4. Click on Properties
5. Click on Advanced tab and you will see something like the screen shot below:

Encr

6.   Select Large Send Offload v2 (IPv4) and on the Value field select disable just like the screen shot below:

Encryption Error Solution

Press ok and you should be back in business.

Hope this helps.

Further to my post below, today (Thursday, December 18, 2008) I have found another possible variant of bobzop.com as colzop.com. I was unable to find any information on the Internet, but it presents the same symptoms as described below. Be careful clinking on any links from your MSN.

This is possibly a new virus or spy ware for your computer. Time to time some users of MSN messenger are receiving a message such as: *Hey (Friend name) this site is giving away free blackberry phones if you are willing to test one, hurry before they give them all away go to http://(myname).bobzop.com* <—- DON’T CLICK THE LINK!

While I don’t know much about this but seriously speaking no one is going to give away free blackberry phones. It also appears that you will find this message on many different versions of MSN including the Live Messenger. The solution so far seems to be the following:

  1. If you receive such message from a contact on your MSN list contact the user
  2. Inform them about the problem
  3. Ask them to change their password for MSN messenger
  4. Run a scan on their computer with an up to date anti virus program
  5. Run a scan with spy ware software

If the user is not helpful and do not want to do any of these, you may want to block the user for awhile.

If anyone else has any other solutions please let us know.