File Transfer is Disabled on the Remote Machine

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File Transfer is Disabled on the Remote Machine

Postby redge » 2005-09-26 00:48

> WARNING: File Transfer is Disabled on the Remote Machine

No impersonation = Full Access

  • you need to use recent build vnc viewer and vnc server.
    actual winvnc 1.0.2 and vncviewer 1.0.2 prefered (July 1 2006 or higher)
  • File Tranfer compatibility broken between RC18 and release 1.0.2
  • File Transfer UltraVNC <--> UltraVNC OK
    File Transfer UltraVNC <--> others VNC flavors, not possible.

  • vnc server as service system (no body at front of remote computer)
    if not started, follow step

    Start...All Programs...UltraVNC ... UltraVNC Server...Reinstall WinVNC Service(silent)
    Start... Run... net start winvnc
    Start...All Programs...UltraVNC ... UltraVNC Server...Run Service Helper
    right click on systray WinVNC ... Admin Properties...
    or
    Start...All Programs...UltraVNC ... UltraVNC Server... Show Default Settings
    ---Authentication---
    VNC password: (put your password again)


    table of values for File Transfer and User impersonation
    • winvnc started as system service (user logged)
      [X]Enable [X] User impersonation (for Service only) -> FT allowed
      [X]Enable [ ] User impersonation (for Service only) -> FT allowed
      [ ]Enable [X] User impersonation (for Service only) -> FT blocked
      [ ]Enable [ ] User impersonation (for Service only) -> FT blocked

    • winvnc started as system service (user NOT logged)
      [X]Enable [X] User impersonation (for Service only) -> FT blocked
      [X]Enable [ ] User impersonation (for Service only) -> FT allowed
      [ ]Enable [X] User impersonation (for Service only) -> FT blocked
      [ ]Enable [ ] User impersonation (for Service only) -> FT blocked

or


  • vnc server as user application (someone at front of remote computer

    Start...All Programs...UltraVNC ... UltraVNC Server
    and right click on systray WinVNC ... Admin Properties...
    ---Authentication---
    VNC password: (put your password again)


    • winvnc running as user application (user always logged)
      [X]Enable [X] User impersonation (for Service only) -> FT allowed
      [X]Enable [ ] User impersonation (for Service only) -> FT allowed
      [ ]Enable [X] User impersonation (for Service only) -> FT blocked
      [ ]Enable [ ] User impersonation (for Service only) -> FT blocked

manual settings with regedit (don't touch it if you don't know use regedit)
==================== Begin ====================
REGEDIT4

[HKEY_LOCAL_MACHINE\Software\ORL\WinVNC3\Default]
"FileTransferEnabled"=dword:00000001
"FTUserImpersonation"=dword:00000000


==================== End =======================


Rudi De Vos wrote:FTUserImpersonation use the current logged user, NOT the mslogon user.

FTUserImpersonation=1
FT only works when somebody is logged.
FT permission are local user
FT can copy/delete files with the permission of the desktop user
FT can acces shared folders

FTUserImpersonation=0
FT does not require a logon
FT is being done as "local system"
FT has full access, you can copy/delete files as you where administrator
FT has no access to network shares and special "current user folders"


Just know what you are doing before setting
FTUserImpersonation=0


No impersonation = Full Access


sources:
Setting up UVNC as service
File transfer problem
Fix for File transfer failure after 1.0.1 Server upgrade
Last edited by redge on 2006-12-19 20:58, edited 4 times in total.
UltraVNC 1.0.9.6.1 (built 20110518)
OS Win: xp home + vista business + 7 home
only experienced user, not developer
redge
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Location: Switzerland - Geneva

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