I solved my own problem and those of you out there that are having similar problems on systems after updating service packs or getting the immediate disconnect should also try this. I completely removed the video drivers on the server I wish to control, rebooted, and reinstalled the video drivers, then rebooted again. I set the default video display color depth to be the same as my client (High Color 16bit for both). Magically I was able to connect to the system through the service. I hacked the registry to set the default color depth but most of you shouldn't need to do that. I have replaced network cards (I used to use 3com exclusively but have had LOTS of problems with them in the last 18 months or so, you CANNOT use multiple 3COM PCI adapters in the same system because of HW identification problems, geez.) I have replaced video cards, changed brands to standardize servers bought during different times. Thought someone might be interested. ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ +++++++++++++++++++++++++++++++++++++++++++++++ I have searched the archives and found several similar problems, but no resolutions to my problem. I have 2 servers running Win2k sp2 and WinVNC 3.3.3r9. On one of the boxes everything runs fine. I have VNC installed as a service and can connect to and operate efficiently. On the other hand, the other server is unable to be connected to when run as a service. I have successfully connected to the server when running in APP mode but not when running as a service. I have verified the screen resolution the server is running at 800x600 and 256 colors (both servers) and both servers have identical video HW and drivers. I have attempted to connect with various clients (linux, win98, win2k, java) and have had the same results. below is the log from startup through close of a single session connection attempt. D:\ORL\vss\winvnc\vncServer.cpp : authhosts cleared D:\ORL\vss\winvnc\vncProperties.cpp : clearing user settings D:\ORL\vss\winvnc\vncPasswd.h : PASSWD : FromClear called D:\ORL\vss\winvnc\vncProperties.cpp : loading DEFAULT local settings D:\ORL\vss\winvnc\vncServer.cpp : trying port number 5900 Wed Jul 11 04:12:03 2001 D:\ORL\vss\winvnc\VSocket.cpp : closing socket D:\ORL\vss\winvnc\VSocket.cpp : closing socket D:\ORL\vss\winvnc\vncSockConnect.cpp : started socket connection thread Wed Jul 11 04:12:04 2001 D:\ORL\vss\winvnc\VSocket.cpp : closing socket D:\ORL\vss\winvnc\vncPasswd.h : PASSWD : ToText called D:\ORL\vss\winvnc\vncHTTPConnect.cpp : started HTTP server thread Wed Jul 11 04:12:06 2001 D:\ORL\vss\winvnc\WinVNC.cpp : message 275 recieved D:\ORL\vss\winvnc\WinVNC.cpp : message 84 recieved D:\ORL\vss\winvnc\vncMenu.cpp : usernames : old="", new="" Wed Jul 11 04:12:11 2001 D:\ORL\vss\winvnc\WinVNC.cpp : message 275 recieved D:\ORL\vss\winvnc\WinVNC.cpp : message 84 recieved D:\ORL\vss\winvnc\vncMenu.cpp : usernames : old="", new="" Wed Jul 11 04:12:15 2001 D:\ORL\vss\winvnc\vncSockConnect.cpp : accepted connection from 24.25.10.145 D:\ORL\vss\winvnc\vncClient.cpp : vncClient() executing... D:\ORL\vss\winvnc\vncServer.cpp : AddClient() done D:\ORL\vss\winvnc\WinVNC.cpp : message 1026 recieved D:\ORL\vss\winvnc\vncClient.cpp : client connected : 24.25.10.145 (1) D:\ORL\vss\winvnc\vncClient.cpp : negotiated version D:\ORL\vss\winvnc\vncPasswd.h : PASSWD : ToText called D:\ORL\vss\winvnc\vncServer.cpp : verify succeeded - null filter Wed Jul 11 04:12:16 2001 D:\ORL\vss\winvnc\WinVNC.cpp : message 275 recieved D:\ORL\vss\winvnc\WinVNC.cpp : message 84 recieved D:\ORL\vss\winvnc\vncMenu.cpp : usernames : old="", new="" Wed Jul 11 04:12:19 2001 D:\ORL\vss\winvnc\vncDesktop.cpp : initialising desktop handler D:\ORL\vss\winvnc\vncService.cpp : SelectHDESK to Winlogon (230) from 40D:\ORL\vss\winvnc\vncService.cpp : SelectHDESK failed to close old desktop 40 (Err=170) D:\ORL\vss\winvnc\vncDesktop.cpp : bitmap dimensions are 800 x 600 D:\ORL\vss\winvnc\vncDesktop.cpp : created memory bitmap D:\ORL\vss\winvnc\vncDesktop.cpp : got bitmap format D:\ORL\vss\winvnc\vncDesktop.cpp : DBG:display context has 1 planes! D:\ORL\vss\winvnc\vncDesktop.cpp : DBG:memory context has 1 planes! D:\ORL\vss\winvnc\vncDesktop.cpp : DBG:used/bits/planes/comp/size = 0/4/1/0/240000 D:\ORL\vss\winvnc\vncDesktop.cpp : attempting to enable DIBsection blits D:\ORL\vss\winvnc\vncDesktop.cpp : unable to enable fast blits D:\ORL\vss\winvnc\vncService.cpp : SelectHDESK to Default (40) from 230D:\ORL\vss\winvnc\VSocket.cpp : closing socket D:\ORL\vss\winvnc\vncDesktop.cpp : killing screen server D:\ORL\vss\winvnc\vncDesktop.cpp : failed to ReleaseDC D:\ORL\vss\winvnc\vncServer.cpp : Authenticated() done D:\ORL\vss\winvnc\vncServer.cpp : RemoveClient() done D:\ORL\vss\winvnc\vncClient.cpp : ~vncClient() executing... D:\ORL\vss\winvnc\vncClient.cpp : deleting socket D:\ORL\vss\winvnc\WinVNC.cpp : message 1027 recieved D:\ORL\vss\winvnc\WinVNC.cpp : message 1028 recieved Wed Jul 11 04:12:21 2001 D:\ORL\vss\winvnc\WinVNC.cpp : message 275 recieved D:\ORL\vss\winvnc\WinVNC.cpp : message 84 recieved D:\ORL\vss\winvnc\vncMenu.cpp : usernames : old="", new="" Wed Jul 11 04:12:23 2001 D:\ORL\vss\winvnc\WinVNC.cpp : shutting down server D:\ORL\vss\winvnc\vncServer.cpp : shutting down server object D:\ORL\vss\winvnc\VSocket.cpp : shutdown socket D:\ORL\vss\winvnc\VSocket.cpp : closing socket D:\ORL\vss\winvnc\vncSockConnect.cpp : accepted connection from 127.0.0.1 D:\ORL\vss\winvnc\vncClient.cpp : vncClient() executing... D:\ORL\vss\winvnc\vncServer.cpp : AddClient() done D:\ORL\vss\winvnc\vncSockConnect.cpp : quitting socket connection thread D:\ORL\vss\winvnc\VSocket.cpp : closing socket D:\ORL\vss\winvnc\VSocket.cpp : shutdown socket D:\ORL\vss\winvnc\VSocket.cpp : closing socket D:\ORL\vss\winvnc\vncHTTPConnect.cpp : HTTP client connected D:\ORL\vss\winvnc\VSocket.cpp : zero bytes read D:\ORL\vss\winvnc\VSocket.cpp : shutdown socket D:\ORL\vss\winvnc\VSocket.cpp : closing socket D:\ORL\vss\winvnc\vncHTTPConnect.cpp : quitting HTTP server thread D:\ORL\vss\winvnc\VSocket.cpp : closing socket D:\ORL\vss\winvnc\vncServer.cpp : KillAuthClients() done D:\ORL\vss\winvnc\vncServer.cpp : killing unauth client D:\ORL\vss\winvnc\VSocket.cpp : closing socket D:\ORL\vss\winvnc\vncServer.cpp : KillUnauthClients() done D:\ORL\vss\winvnc\vncClient.cpp : client connected : 127.0.0.1 (2) D:\ORL\vss\winvnc\vncClient.cpp : failed to set socket timeout(10038) D:\ORL\vss\winvnc\vncServer.cpp : removing unauthorised client D:\ORL\vss\winvnc\vncServer.cpp : RemoveClient() done D:\ORL\vss\winvnc\vncServer.cpp : shutting down server object(4) D:\ORL\vss\winvnc\vncClient.cpp : ~vncClient() executing... D:\ORL\vss\winvnc\vncClient.cpp : deleting socket David E. Kroll CEO, Network Business Solutions, LLC. P.O. Box 2582 Chapel Hill, NC 27515 (919) 401-9922 (919) 403-6391 Fax (919) 669-3757 Mobile http://www.2networkit.com mailto:[EMAIL PROTECTED] All Information and Attachments Provided are held Confidential and Proprietary unless otherwise noted. Recipients of such information are not to disclose or discuss said information with anyone else without prior written consent. This transmission may be a confidential communication or otherwise be privileged or confidential. If you are not the intended recipient, you are hereby notified that you have received this transmission in error; any review, dissemination, distribution or copying of this transmission is strictly prohibited. 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