Remote Desktop Agent Boot Loader is Microsoft's executable that loads and self-updates the Azure Virtual Desktop agent on Windows session hosts, keeping host pool connectivity current.
Remote Desktop Agent Boot Loader is the Microsoft component that loads the Azure Virtual Desktop agent on a Windows session host and keeps it updated. It runs as a service, checks the service for newer agent builds, and downloads them automatically, so a registered virtual machine stays current without manual patching. It installs alongside the infrastructure agent and the side-by-side stack, and all three are required for end-to-end user connectivity. IT administrators deploying Azure Virtual Desktop host pools use Remote Desktop Agent Boot Loader during host registration with PowerShell or when rebuilding session hosts from a custom image.
Remote Desktop Agent Boot Loader ships as a WiX-based MSI and is normally installed after the virtual machine has been generalized, since installing before sysprep is unsupported. Microsoft does not publish older installers because the tools self-update, so winget always retrieves the latest build and checksum mismatches can appear right after a new release. Uninstalling Remote Desktop Agent Boot Loader together with the Remote Desktop Services Infrastructure Agent is required before re-registering a machine to a different host pool, otherwise the old pool record persists. Administrators comparing the two components often review documentation for the pair before planning a host pool rollout.
Remote Desktop Agent Boot Loader keeps the Azure Virtual Desktop agent current on every session host without a manual patching routine, which removes a recurring maintenance task from virtual desktop operations. Because the bootloader checks the service and downloads newer agent, side-by-side stack, and Geneva Monitoring builds automatically, session hosts pick up fixes and security updates on their own, reducing the chance that outdated components break user connectivity. The bootloader also starts the agent process at boot, so a virtual machine becomes available to the host pool without administrator intervention after a restart. Registration is scriptable, since a host pool token can be passed through msiexec or winget during installation, allowing unattended rollouts through Intune or Configuration Manager. Standard silent switches mean the same command works across an entire fleet. When troubleshooting, uninstalling Remote Desktop Agent Boot Loader clears stale registrations so a session host can be re-registered cleanly.
Key capabilities and highlights.
Remote Desktop Agent Boot Loader runs as a Windows service that starts the Azure Virtual Desktop agent process when the session host boots. Without it the agent never runs and the machine cannot connect to the host pool. Administrators troubleshooting registration failures check this service first, since a stopped bootloader looks identical to a missing agent.
Remote Desktop Agent Boot Loader queries the Azure Virtual Desktop service for newer agent, side-by-side stack, and monitoring builds, then downloads and applies them automatically. This keeps session hosts current without a separate patching process, and it is the reason Microsoft does not publish older agent installers for manual download.
Both Remote Desktop Agent Boot Loader and the agent it loads update themselves rather than waiting for an administrator to push a new installer. Microsoft stages releases through a validation ring before broader rollout, so fixes reach fleets gradually. The installed build can therefore differ from the version listed in a package manager.
Remote Desktop Agent Boot Loader ships as a WiX-based MSI that accepts quiet switches such as /qn and /norestart. Deployment scripts can install it unattended through Intune, Configuration Manager, or PowerShell, which matters when a host pool contains hundreds of session hosts that must be provisioned identically without manual steps.
Uninstalling Remote Desktop Agent Boot Loader along with the infrastructure agent removes a machine's association with its current host pool. Reinstalling with a new registration token then moves the session host cleanly, which resolves duplicate or expired registration errors without rebuilding the virtual machine.
Remote Desktop Agent Boot Loader is published to the winget repository as Microsoft.WindowsVirtualDesktopBootloader, so administrators can install it with one command. The package always retrieves the newest build, and updates are handled through winget upgrade, giving Windows administrators a consistent path alongside existing deployment tooling.
When a session host stalls in an upgrading or unavailable state, the bootloader service can be set to Automatic (Delayed Start) and the Windows ServicesPipeTimeout value increased to give the agent more time to report. These adjustments address slow-booting virtual machines where heavy logon scripts or antivirus scans starve the agent at startup.
Remote Desktop Agent Boot Loader runs on Windows virtual machines hosted in Azure, on-premises, or in another cloud, provided the required service URLs are reachable. Machines provisioned from the Azure Marketplace receive it automatically, while custom images require manual installation during host pool registration.
Browse historical releases and previous builds.
Common questions about Remote Desktop Agent Boot Loader.
It loads the Azure Virtual Desktop agent on a Windows session host and keeps that agent, the side-by-side stack, and the monitoring component updated. Without the bootloader the agent does not run, and the virtual machine cannot register with a host pool or accept user connections.
Yes. It is a free Microsoft component distributed as an MSI and through the winget repository. Costs come from the Azure Virtual Desktop service and the virtual machines themselves, not from the bootloader.
Run winget install --id Microsoft.WindowsVirtualDesktopBootloader --exact. The package always installs the latest build regardless of the version specified, because Microsoft does not publish older bootloader installers and the tools self-update.
Microsoft does not publish older bootloader installers, and the components update themselves. A checksum mismatch can appear between the moment Microsoft releases a new installer and the moment package metadata is refreshed, which is expected behavior rather than a corrupted download.
No. Installing the bootloader or agent before the virtual machine is generalized is not supported. The components should be installed after the VM has been deployed, which is why golden images are usually built without them and both are added during host pool registration.
Uninstall both Remote Desktop Agent Boot Loader and the infrastructure agent, reboot, then reinstall both with the registration token for the new host pool. Uninstalling clears the association with the old pool so the machine can be re-registered cleanly.
A slow boot is a common cause. Setting the Remote Desktop Agent Loader service to Automatic (Delayed Start) and increasing the Windows ServicesPipeTimeout value gives the agent more time to report. Heavy logon scripts, antivirus scans, and insufficient IOPS on the virtual machine can also starve the agent at startup.
Remote Desktop Agent Boot Loader is Microsoft's executable that loads and self-updates the Azure Virtual Desktop agent on Windows session hosts, keeping host pool connectivity current.
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