Below are the prerequisites that must be met or considered before installing WebTitan OTG for Windows. Please read through this information carefully before installation.


1. The most recent version of WebTitan OTG for Windows (version 2.2.23) is supported and tested for the following Windows releases:

Supported Windows Release

Latest Windows Versions Tested with OTG

Windows 10

Version 22H2

Windows 11

Version 24H2

Note: Virtual Machines are not supported for OTG.


2. WebTitan OTG for Windows must be installed on a machine running .NET Framework 4.8 or later. Check the following registry location to determine your current .NET Framework version:

Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full\Version


3. You must have administrative privileges for the machine on which you are installing WebTitan OTG for Windows.


4. You need to know your WebTitan OTG URL, e.g. https://your-otg-url.webtitancloud.com/. See WebTitan OTG URLs to determine your OTG URL.


5. You need your OTG install key during installation. You can get this in WebTitan from Settings > Device Configuration > OTG Install Key.


6. You need to allow the following ports, as they are required for WebTitan OTG to function:
  • 7771 (for user group sync)
  • 7777 (for WADA communication between DC and DNS proxy)
  • 80, 8080, 443, 8443 (for user interface and block page)
  • TCP and UDP 53 (for DNS)
  • TCP 8822 and 9100 (for support connection)