.Using a large number of queues might cause Windows virtual machines to fail Windows virtual machines (VMs) might fail when the virtual Trusted Platform Module (vTPM) device is enabled and the _multi-queue virtio-net_ feature is configured to use more than 250 queues. This problem is caused by a limitation in the vTPM device. The vTPM device has a hardcoded limit on the maximum number of opened file descriptors. Since multiple file descriptors are opened for every new queue, the internal vTPM limit can be exceeded, causing the VM to fail. To work around this problem, choose one of the following two options: * Keep the vTPM device enabled, but use less than 250 queues. * Disable the vTPM device to use more than 250 queues.