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Remote Desktop connection issues - Windows 7

Posted on 2014-03-20
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Last Modified: 2014-04-20
I have a couple workstations on my internal domain where I can not establish a remote desktop connection.  When I try to connect to these workstations, I get a "Remote Desk can't connect to the remote computer for one of these reasons:" error.

This is what I have done to try to resolve the issue:
1) Verified that the remote user does have permissions to connect to the workstation
2) Turned off the firewall (we are using F-Secure)
3) Stopped all the F-Secure services
4) Tried to telnet the port "3389", no connection should be established

So it appears that port "3389" is still being blocked somehow.  What is the best way to figure out what is blocking that port on the desktop?
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Question by:shrimpfork
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Expert Comment

by:arekkusu82
ID: 39944011
Some questions.
Can you ping the machine (by name and/or ip address)?
Can you ping your machine from the one your are trying to connect to?

You can check what ports are open with CurrPorts. Sometimes, disabling the firewall completely requires that you restart the machine as well. I havenoticed this at leat with the Windows Firewall.
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Expert Comment

by:Santosh Gupta
ID: 39944024
Hi,

Did you checked windows 7 firewall ?
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Author Comment

by:shrimpfork
ID: 39944027
@ arekkusu82:  Yes, I can ping each machine from the other.  I checked the port on the machine that I am trying to connect to using "netstat -ano" and I do not see where port 3389 is listening.  I am not using windows firewall.  F-Secure has an option to allow all connections, which I have also tried.

@ Santosh Gupta:  I am not using windows firewall.  But yes when I went into the windows firewall setting, the Remote Desktop is selected as an allowed program in the domain.
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Expert Comment

by:Santosh Gupta
ID: 39944040
Hi,

Which AntiVirus you are using ??
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Author Comment

by:shrimpfork
ID: 39944044
F-Secure PSB Workstation Security
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Expert Comment

by:Santosh Gupta
ID: 39944064
Hi,

Use the TCPView to check that which port is being used by which process/program.
http://technet.microsoft.com/en-us/sysinternals/bb897437.aspx
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Expert Comment

by:arekkusu82
ID: 39944191
Can you completely disable F-Secure to rule out is not blocking the incoming traffic.

I have Remote Services running on my machine and I can see this under CurrPorts:

System      1800      TCP      3389      ms-wbt-server      0.0.0.0                  0.0.0.0            Listening                                    N/A            CryptSvc, Dnscache, LanmanWorkstation, NlaSvc, TermService            21/03/2014 1:30:02 p.m.                        
System      1800      TCP      3389      ms-wbt-server      ::                  ::            Listening                                    N/A            CryptSvc, Dnscache, LanmanWorkstation, NlaSvc, TermService            21/03/2014 1:30:02 p.m.
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Expert Comment

by:ranadastidar
ID: 39944718
try to use teamviewer
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Author Comment

by:shrimpfork
ID: 39946171
Using TCPView, port 3389 is not listed on the computer that I am trying to connect to.
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Expert Comment

by:Santosh Gupta
ID: 39946207
Please check if "remote desktop services security filter driver" is disabled.

To check whether this enabled or disabled,
open device manager and show hidden devices. if it is not enable it, if it is already enabled, disable and re-enable it.

if unable to enable it, uninstall it and reboot the server.
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Author Comment

by:shrimpfork
ID: 39946242
"Remote Desktop Services Security Filter Driver" is not listed in the devices.  (I compared the list it to a computer that is working.)  So now what?
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Accepted Solution

by:
shrimpfork earned 0 total points
ID: 39946572
So I removed Microsoft Update KB2667402 and the remote desktop is now working.  What is KB2667402 for and do I need it?
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Assisted Solution

by:Santosh Gupta
Santosh Gupta earned 500 total points
ID: 39946593
Hi,

As per Microsoft, This security update resolves two privately reported vulnerabilities in the Remote Desktop Protocol. The more severe of these vulnerabilities could allow remote code execution if an attacker sends a sequence of specially crafted RDP packets to an affected system. By default, the Remote Desktop Protocol (RDP) is not enabled on any Windows operating system. Systems that do not have RDP enabled are not at risk

http://technet.microsoft.com/en-us/security/bulletin/ms12-020

if you dont have puble/internet facing system then you do not need this update.
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Expert Comment

by:LeeTutor
ID: 40001572
I've requested that this question be deleted for the following reason:

Not enough information to confirm an answer.
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Author Comment

by:shrimpfork
ID: 40001573
There is a solution to this question.  I discovered it myself as it was posted.  I just forgot to close the questions.  Please cancel this close request so that I can properly assign points.
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Author Closing Comment

by:shrimpfork
ID: 40011158
I found the solution while searching the web.  The second part of the points, confirmed that I did not need the KB update for my environment.
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