Encrypt SCPrompt communications using SecureVNC plugin

Encrypt SCPrompt communications using Ultravnc’s SecureVNC DSM plugin which uses AES-256 encryption for all communications between client and server

SecureVNC Plugin allows secure communications between UVNC viewer and server. The following steps show how-to Add SecureVNC plugin to secure SCPrompt.

As SCPrompt uses UVNC server at its core, its easy to modify SCPrompt to use SecureVNC Plugin which secures connections between ultravnc components using AES-256

By using an encryption module (DSM in UVNC world), you can be assured that only the person with a correctly configured SCPrompt server can connect to the viewer and only the viewer from the person who created the SCPrompt is able view remote computers using SCPrompt created by you.

  1. download scprompt Roll-your-own and unzip to a suitable location.
  2. download SecureVNC.dsm.
  3. place SecureVNC.dsm in the same folder as scprompt.exe
    (there are all conf files and others)
  4. Next step is to configure your ultravnc.ini.
    You can make it by your hands or just start winvnc.exe in the scprompt directory and configure it through the program properties.
    All changes made in program gui will be written to ultravnc.ini in the scprompt directory
  5. Enable SecureVNC.dsm plugin (by hands or through gui).
  6. Configure scprompt.ini through gui (provided by settings_manager.exe).
  7. “build” scprompt.
  8. run uvncviewer in listen mode, don’t forget to:
    1. copy SecureVNC.plugin to vncviewer’s directory
    2. make uvncviewer use SecureVNC.plugin.
  9. Enjoy the secure opensource goodness

That’s all.

SCPrompt Version released

So much has changed in this version that we figured it was about time to move to version #1 …

**Link removed as old & dead now**

New manual version released (We realised this hadn’t been updated in a while … only about 2 years old)

**Link removed as old & dead now**

Updates for THIS release

  • Add – All GUI – Disclaimer GUI shows on startup if disclaimer.htm or disclaimer_*language*.htm exists in scprompt dir (examples: disclaimer_english.htm or disclaimer_german.htm) 
  • Add – All GUI – New tool menu to allow whiteboard writing on screen 
  • Add – All GUI – New tool menu to Start Beacon GUI to call user back to screen. 
  • Add – All GUI – Contextual menu to the Main GUI Screens (doesn’t work too well on button or automatic GUIs – but otherwise works well) 
  • Add – Auto GUI – translation are now available for this GUI type 
  • Add – Auto GUI – Is now an option in GUI_Type within the INI (in addition to the commandline) 
  • Add – Auto GUI – Option to disable Beeps on timer count-down ([Common] > GUIAUTOSILENT=1) 
  • Add – Manual GUI – Is now an option in GUI_Type within the INI (will make settings manager easier to setup manual & automatic GUI’s). 
  • Add – Button GUI – Service Mode (untested, and needs refining, but its there) 
  • Add – Builder – NSIS to Builder (i just made the Batch script into the autoit script … so now it uses the directory name as the application name) 
  • Add – Builder – Setting for Pre (Before) & Post (After) when creating the shortcuts in NSIS mode Builder.INI (best i can do at this point) 
  • Add – Settings Manager – New settings manager (has 4 tabs in it now, to make selections a little easier to understand, and give me room to add more settings as required). 
  • Add – Settings Manager – a “test it” button (or press “CTRL + T”). 
  • Add – Settings Manager – GUI (Accelerator) shortcut keys for Apply (“CTRL + S”) and new test (“CTRL + T”) 
  • UPDATE – Settings Manager – now uses (most of) the latest settings and should be easier and better to use (a few of the minor setting left out, but it is enough for the moment) 
  • UPDATE – All GUI – Change all Languages to use Seperate Language INI files (including English) to allow better selection of Languages and easier Maintenance into the future. 
  • UPDATE – All GUI – Translations now all use the LANG_*****.INI files. All OS IDs are now automatic – may add manual override at a later date if required. 
  • UPDATE – All GUI – Make sure all Translated Languages are in this release 
  • FIX – Error with Combo GUI and one Predefined Connection + Manual (the Predefined connection would disapear – leaving only manual) 
  • Removed – All GUI – Dependancy on [Common] > UsePredefined=1 has been removed as it is no longer needed due to setting Manual as a GUI_Type option

TO-DO for NEXT release

  • Add – Translator – New App – allows easy selection and addition of languages – which can then be listed for blank translations
  • Add – All GUI – If Admin, shutdown all known other versions of VNC before starting SCPrompt in servicemode, then start them up again on exit (save the services we stopped to a temp .ini to allow for recovery after support finishes, no matter how many reboots later that is)
  • Add – Builder – Allow Setting of Company name and more from INI for NSIS package type
  • Add – Settings Manager – Option to setup your own UVNC Password (and read the current one in if possible
  • UPDATE – All GUI – UVNC version to (requires above in settings manager)
  • UPDATE – Buttons GUI – Fix when manual button pressed, the manual address, port & ID inputs cannot be clicked (but can tab to them)
  • UPDATE – All GUI – Get all translations updated !!!
  • FIX – Auto GUI – Diagnose why the icon doesn’t change on automatic GUI … (why does it ?)

Delayed indefinitely

  • Add – All GUI – Safemode starting of VNC server – The Latest BETA version of UVNC server allows for rebooting to safe mode … so not needed anymore – just replace winvnc.exe with latest BETA (which is already a to-do for the next release) 

SCPrompt – Open Source Remote Destop Support Tool

SCPrompt is a versatile Open Source Remote Support Application by SecureTech. SCPrompt allows a person to create a customised Remote Support Tool for their company.

The Roll Your Own (RYO) download, allows you to create your own EXE to send to clients (or upload to your website) which when executed, creates a “reverse” VNC connection (Server tries to connect to listening Viewer).

For those that just want to test it before going through the hassle of learning it, try the “Ready To Roll” version, which allows manual entry of address and port details for easy connection.

Ready-To-Roll (Manual)

DOWNLOAD SCPrompt Remote Support RTR (Manual) Version NOW.

Picture of ‘Manual’ SCPrompt application with ID selected (enabling ID input box).
Picture of ‘Manual’ SCPrompt application without ID selected (disabling ID input box).

Roll-Your-Own … (with Builder and Settings Manager)

Download RYO version

This application (and the associated builder) allows you to create a package to support XP, vista, windows 7,8 &10 without limitations (see below).

Connection names and settings are read from INI settings (Manual is last in list, unless disabled), so no editing of source code is needed… just setup the INI (using included settings manager), run the builder and send to your clients.

Further customisation could include changing the Logo.ico, changing Logo(x).jpg (for each predefined connection) or manually editing the INI to get more advanced features.

Choose Your own GUI …

The Settings Manager allows you to choose your own





Manual Connections are still available (option to disable), but are last in the list … 

A nice count-down timer (for automatic connection to predefined connections) that has a transparent look, and is done with just two simple images, so it should be easy to customise … 

Different Logo’s can be used for each of the predefined connections or a default can be used if that’s all you want … just like above (examples in the RYO package). 

Each predefined connection can have its own image if wanted (maybe a photo for that personal touch) … i just modified the original sc image, keeping the same image size … so you can use your logo from the old SC if you want (after converting to jpg). 

Manually altering the “scprompt.INI” settings is fairly simple (if the settings manager doesn’t suit your needs), the “scprompt_example.ini” file has some explainations on the settings … 


See the following post, or the included readme.txt for basic setup instructrions. 


Translation instructions are (nearly) the same as for other vnc2me products, and are fairly easy to follow (i think). Languages will be automatically selected depending on the clients OSLang settings (windows default language) if no translation is found for the OSLang of windows, then Lang_English is selected as the default. 

Translations can be shared in reply posts of this forum, or on the vnc2me website (you choice). As new translations are required (due to new features), i will “Private Message” the user who originally translated. 

SCPrompt disables Vistas UAC & AERO while running (even while using old SCII version), but issues still surround vista with the OLD SC version, so it is advisable to use the newest server or SC when building. 

To use the old SC application (or an updated server version), simply move the “uvnc.exe” from the scprompt directory, and place the SC version into its place. (you can leave it named “winvnc.exe” or rename it to “uvnc.exe”) 


  • Ability to build your own module using Server (and above) or SCII, SCIII or SC (if size is an issue) 
  • Choose the type of GUI you want to use (ComboBox, Radio Buttons, Push Buttons & automatic countdown timer) 
  • Has native UAC & AERO support on vista & Win7. 
  • Unlimited Predefined Connections (reads from INI) 
  • Desktop wallpaper is restored after application exit. (even if winvnc application closes incrrectly) 
  • MouseSonar is turned on (While scprompt is running), allowing a visual prompt when VNC connection successfully established. 
  • Background color and text color is settable from “scprompt.INI” 
  • customisable Logo?.jpg for each connection (or one for all … you choose) 
  • GUI Text and all Text Prompts are read from “v2m_lang.INI” & “scprompt.ini”, allowing for complete cutomisation 
  • Multiple languages are automatically supported using “OSLang” of client, and above modification (allows you to use one application / download to support multiple languages)


  • UVNC Server (and above) needs settings to be created prior to use (defaults are given, but it is advisable to customise these) 
  • Two or more “SCNames” in the INI cannot be the same (as the first name would be selected from the INI when using certain GUI types) 
  • ‘Radio’ & ‘Button’ GUI types only support 10 predefined connections

Source Code 

All Current & future “Alpha” Releases contain the source code as an application resource, you can use res-hacker to view this.