I'm running SBS2003 Premium, and SBS2000 when I connect to them through VNC I get to log on ok (LAN and WAN), but The First screen after loging- in is a black screen. I tested TightVNC and UltraVNC with the same result on both machines..
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Jeffrey Kane - TechSoEasyPrincipal ConsultantCommented:
For SBS2003 Premium, you have to configure ISA to allow the service and I believe you need to allow for local logins with whatever account is accessing the server because VNC treats the login as local.

But why don't you just use the built-in Remote Desktop??? It works quite well.  You can then remote into any other machine on the network if need be.  I've actually configured custom Remote Desktop MMC's that allow me to access all of the networks I manage in this way.
See for a screen shot of how this looks.


LocoFedeAuthor Commented:
Thanks, I will give ISA a go. The reason I use vnc is that the 2 machines are behind a firewall and I'm ingnorance about RD (VNC worked fine for me for many years).  
LocoFedeAuthor Commented:
ISA doesn't seem to be the issue, I still get a black screen on both servers (SBS 2000 and SBS2003).
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Jeffrey Kane - TechSoEasyPrincipal ConsultantCommented:

First, my disclaimer of a bias:  I have a rather strong belief that when you deploy new technology while holding on to legacy systems because they are more comfortable eventually leads to incredible inefficiencies.  While there may be a simple answer to this problem, you'll spend more time troubleshooting it than it would take to familiarize yourself with the native tools of SBS.

You really should familiarize yourself with both Remote Desktop and Remote Web Workplace (on SBS2003) which allow a secure connection to any LAN PC very easily through Internet Explorer.  And as you can see from the screenshot I provided above, using the Remote Desktop Management Console makes it incredibly easy to navigate beyond any firewall for administrative purposes.

Okay, now for the simple answer to your problem... have you rebooted the target machines to see if that will clear up your blank screen?  There is a known issue that TightVNC will get a blank screen if an RDP session has been initiated prior to the VNC session.  While there may be a way to clear the video block, rebooting might do the trick.  Again this issue is caused by VNC emulating a local login, while RDP's behavior is to black out the screen while someone is logged in remotely.  You may actually have to disable Terminal Services on the workstation to stop this from happening.  But once you start disabling default services, it's my opinion that you are heading down the wrong path with regards to ease of management.

LocoFedeAuthor Commented:
Thank you. Rebooting does the trick as long as you don't access the pc via Remote Desktop after a reboot. I agree with you regarding Remote Web Workplace and Remote Desktop, the issue in this particular place is that not all desktops are in the same domain, nor login from SBS2003. Furthermore they have every version of windows from 98 to XP. As soon as I bring the network up to scracth, you right, VNC may not longer requiered.


Jeffrey Kane - TechSoEasyPrincipal ConsultantCommented:
Well, then in the mean time you'll have to deal with those reboots.  You could use LogMeIn's ITReach (which I also use for instant remote assistance).  It'll work without a problem because it doesn't use the same protocols as RDP and VNC.


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