: Please specify which operating system your Hyper-V virtual machine is running (Windows version or Linux distribution). I can then provide exact steps to install or update the VMBus driver.
For modern Windows guest VMs (Windows 10, Windows 11, Windows Server 2016 and later), the VMBus Provider Driver is delivered automatically via as a "Dynamic Update." You do not need to manually download it. : Please specify which operating system your Hyper-V
Microsoft Hyper-V Virtual Machine Bus (VMBus) Provider driver is a built-in component of Windows that enables high-performance communication between a guest virtual machine and the host hypervisor. It is not a standalone file you download from a typical website; rather, it is part of the Hyper-V Integration Services Microsoft Learn How to Get and Install the Driver Windows Server 2016 and later)