FireDaemon Zero and Zero OEM 3.0.2

FireDaemon Zero 3 is a major update to our Session 0 management product. FireDaemon Zero allows you to easily switch to and from Session 0 on specific versions of Microsoft Windows.


Minimum System Requirements

Please see the FireDaemon Zero Compatibility and Support Matrix.

Deployment Matrix

Before deploying FireDaemon Zero on any system, please refer to the FireDaemon Zero and ZeroInput Deployment Matrix for important information about compatibility and system requirements.

FireDaemon Zero 3 End User Download

FireDaemon Zero 2 license keys do not work with FireDaemon Zero 3. You will need to obtain a new license key to use FireDaemon Zero 3. Please read the "Get New License Keys" section below.

FireDaemon Zero 3.0.2 64-bit / x64 (Intel / AMD only)

May 2023 - 30-day trial

Download Trial: Manage interactive services on Session 0

For Microsoft Windows

FireDaemon Zero 3 OEM Integrator Download

FireDaemon Zero OEM customers can download product updates via the download link embedded in your Cleverbridge order confirmation or subscription renewal email. If you can't find that email or are unsure of your Cleverbridge reference number please contact us. FireDaemon Zero 3 OEM is available to existing customers that have a current Software Assurance and Technical Support subscription.

FireDaemon Zero 3 New Features

64-bit onlyMicrosoft ceased delivering 32-bit native operating systems in 2020. Hence, FireDaemon Zero 3 is now only offered as a 64-bit product.
Hardware-based code signing
All FireDaemon software products have been digitally signed for a number of years. We recently implemented hardware-based 3072-bit Extended Validation (EV) code signing. This adheres to industry best practices and provides two levels of trust:
  1. The issuance of a hardware-based EV Code Signing Certificate is contingent on FireDaemon Technologies Limited being audited by the certificate issuer (i.e. SECTIGO); and
  2. Security Teams can validate our installers and binaries to ensure they have not been tampered with by confirming the presence of our EV Code Signing Certificate.
Zero Input Compatibility
FireDaemon Zero 3 works with FireDaemon ZeroInput to give extended error reporting via the FDUI0Control query --fdui0input-state command line option.
Context Menu Changes
The "Documentation" option has been removed from the Session 0 context menu as this requires a browser that works sanely on Session 0. A "Screen Refresh" option has been added to the Session 0 context menu to allow you to force the refresh / redraw of GUI components on Session 0.
New Installer
FireDaemon Zero 2 and earlier installers were built using InstallShield. InstallShield does not support the detection and deployment of the Microsoft Visual Studio Runtime (MSVCRT) particularly well, forcing reboots in the event of earlier versions of the MSVCRT being present on your computer system. We have replaced the InstallShield MSI installer with an Advanced Installer MSI installer package that correctly handles MSVCRT deployments and upgrades.
Software Assurance and Priority Technical Support SubscriptionFireDaemon Zero 2 offered two subscriptions to customers. A Software Assurance subscription and a Priority Technical Support subscription. This often caused confusion in regard to software upgrades and support entitlements. To resolve this we now have a single unified Software Assurance and Priority Technical Support subscription. It costs roughly the same as both previous subscriptions. We feel this will be easier to manage and simpler to understand from an upgrade entitlement, software procurement, and support perspective moving forward.

Buy FireDaemon Zero 3

You can purchase FireDaemon Zero 3 via the webstore.

FireDaemon Zero 3 Documentation

We are currently in the process of updating the FireDaemon Zero 3 documentation. It's an arduous task ...

Before Upgrading To FireDaemon Zero 3

Before you consider upgrading to FireDaemon Zero 2, please ensure you have completed the following pre-flight checks:

Step 1. Check Compatibility

Step 2. Backup

  • Ensure you backup and/or snapshot your machine.

Step 3. Get New License Keys

  • Your FireDaemon Zero 2 or earlier license key will not work with FireDaemon Zero 3.
  • FireDaemon Zero 3 and FireDaemon Zero 3 OEM are available for free to customers with a current Software Assurance subscription. Please contact us to obtain your new license keys or link to download FireDaemon Zero 3 OEM.
  • If you don't have a Software Assurance subscription you will need to purchase new licenses. You can purchase new FireDaemon Zero 5 licenses with an optional Software Assurance and Priority Technical Support subscription.

Step 3. Check Your Upgrade Path

  • If you have FireDaemon Session 0 Viewer 1 installed, this product will be removed and replaced with FireDaemon Zero 3.
  • If you currently have Zero 2 installed, your version will be upgraded to FireDaemon Zero 3.

Step 4. Prepare for the Upgrade

  • If you have applied your FireDaemon Zero 2 license key, then your license key will no longer be valid. Please apply your FireDaemon Zero 3 license key once the upgrade is complete.

Interactive Services Detection Service Has Been Removed From Windows 10, 11, and Server 2019, 2022

Microsoft removed the Interactive Services Detection Service entirely on Windows 10 1803 or later versions, Windows 11, Server 2019, and Server 2022. Hence, it's no longer possible to actually switch to Session 0 on those OS versions via the Interactive Services Detection Service (UI0Detect). If you are running Windows 10 1709 or earlier versions of Windows then Session 0 access still works as normal. If you have FireDaemon Zero installed and you upgraded to Windows 10 1803, the Interactive Service Detection Service will be preserved, however, when you switch desktop, you will switch to a blank screen. You will need to deploy our ZeroInput driver to resolve this issue. Ensure you review the FireDaemon Zero + ZeroInput Compatibility Deployment Matrix prior to deploying FireDaemon Zero.

Forced Relogin When Returning from Session 0 on Windows 10 1809 and Server 2019 1809

If you RDP into Windows 10 1809 or Server 2019 1809 or later versions and switch desktop to Session 0 then attempt to switch back to your logged-in session - you will always be returned to the Windows login screen. We have no fix or workaround for this. Note that you do not see this behaviour if you are logged directly into the Windows 10 1809 or Windows Server 2019 1809 console.

No Access To Session 0 via RDP on Windows 10 1903 or later, Windows 11, or Server 2022

Switching to Session 0 on Windows 10 1903 or later, Windows 11, or Server 2022 over RDP no longer works. It would appear Microsoft is now actively blocked the contents of the Session 0 desktop from being rendered in the RDP session and / or dropping the RDP session entirely. If you try switching to Session 0 your RDP session will hang, you will have to forcibly disconnect and then reconnect to your computer. The only workarounds that we know of are:

  • Login to the physical console session of your computer directly (e.g. via physical keyboard and mouse, via hardware-based computer gateways such as Dell iDRAC or HP ILO, or via virtual machine console offered by VMware vSphere or equivalent).
  • Abandon Microsoft RDP entirely and try using an alternate remote control product instead such as TightVNC, TeamViewer, or TSplus. Your mileage may vary depending on the remote control tool you choose and the particular version of Windows you use. Ensure you test thoroughly.

RDP Session Freeze When Switching to Session 0 on the Console Session on Server 2012 R2, 2016, 2019, 2022

If you connect to the physical console of your Windows Server (i.e. the desktop into which the keyboard and mouse are connected) and then switch desktop to Session 0, all existing RDP sessions will freeze until you return from Session 0. From our investigations, this appears to be due to an unresolvable issue in the terminpt.sys driver that is used by the "Remote Desktop Keyboard Device" and "Remote Desktop Mouse Device". There's no fix or workaround.

Bugs? Issues? Feature Requests?

Tell us what you think! All feedback gratefully received!


FireDaemon Pro 5 and Zero 3 Running on the Logged-On User Session

FireDaemon Pro 5 and Zero 3 Running on the Logged-On User Session

Interactive FireDaemon Pro 5 Services and Zero 3 Tray Running on Session 0

Interactive FireDaemon Pro 5 Services and Zero 3 Tray Running on Session 0