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

  • The most recent version of WebTitan OTG for Windows (version 2.1.1) is supported and tested for the following Windows releases:

    Supported Windows Release

    Latest Windows Versions Tested with OTG

    Windows 10

    Version 21H2

    Windows 11

    Version 21H2 tested in the following scenarios:

    • A laptop shipped with Windows 11 that then had OTG installed.

    • A laptop with Windows 10 upgraded to Windows 11 that then had OTG installed.

    Awaiting certification for:

    • A Windows 10 laptop with OTG installed, which is then upgraded to Windows 11.


    The Windows 11 latest update (version 22H2) is currently unsupported for OTG. If installed, it results in OTG being pushed to a Blocked status. We are investigating this.

  • 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

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

  • You need to know your WebTitan OTG URL, e.g. See WebTitan OTG URLs to determine your OTG URL.

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

  • WebTitan OTG for Windows uses TCP port 7771 (inbound and outbound) for communication to WebTitan. Please ensure this port is not blocked.

  • WebTitan OTG also uses TCP port 8443 (inbound and outbound). Please ensure this port is not blocked.