Issue

Description of problem: Virtio-win-guest-tools' repair function couldn't install the uninstalled driver. Steps to Reproduce: 1.boot up win2019 guest with virtio device. 2.install drivers via Virtio-win-guest-tools.exe 3.uninstall rng and balloon driver right click "My computers"->"properties"->"device manager"--->choose "Virtio Balloon Driver"--> right-click "Uninstall" ---->choose "Delete the driver software for this device"-->Uninstall the driver. 4.open Virtio-win-guest-tools.exe and click repair button 5.reboot guest 6.check if rng and baloon driver is installed Actual results: repair function can not install rng/balloon driver all logs are in attachment. Expected results: repair function can install the uninstalled driver. Additional info: 1.qemu command line /usr/libexec/qemu-kvm -name $1 -enable-kvm -m 6G -smp 8,maxcpus=12,cores=4,threads=1,sockets=3 -rtc base=localtime,driftfix=none -boot order=cd,menu=on -monitor stdio -qmp tcp:0:1235,server,nowait -M q35 \ -cpu 'EPYC',hv_stimer,hv_synic,hv_vpindex,hv_reset,hv_relaxed,hv_spinlocks=0x1fff,hv_vapic,hv_time,hv-tlbflush,+kvm_pv_unhalt \ -cdrom /home/kvm_autotest_root/iso/windows/virtio-win.iso.el8 \ -device pcie-root-port,port=0x10,chassis=1,id=pci.1,bus=pcie.0,multifunction=on,addr=0x3 \ -device pcie-root-port,port=0x11,chassis=2,id=pci.2,bus=pcie.0,addr=0x3.0x1 \ -device pcie-root-port,port=0x12,chassis=3,id=pci.3,bus=pcie.0,addr=0x3.0x2 \ -device pcie-root-port,port=0x13,chassis=4,id=pci.4,bus=pcie.0,addr=0x3.0x3 \ -device pcie-root-port,port=0x14,chassis=5,id=pci.5,bus=pcie.0,addr=0x3.0x4 \ -device pcie-root-port,port=0x15,chassis=6,id=pci.6,bus=pcie.0,addr=0x3.0x5 \ -device pcie-root-port,port=0x16,chassis=7,id=pci.7,bus=pcie.0,addr=0x3.0x6 \ -device pcie-root-port,port=0x17,chassis=8,id=pci.8,bus=pcie.0,addr=0x3.0x7 \ -device pcie-root-port,port=0x18,chassis=9,id=pci.9,bus=pcie.0,multifunction=on,addr=0x4 \ -drive file=$1,if=none,id=drive_system_disk,format=qcow2,cache=none,aio=native,werror=stop,rerror=stop \ -device ide-drive,bus=ide.0,unit=0,drive=drive_system_disk,id=ide0-0-0 \ -blockdev driver=file,cache.direct=off,cache.no-flush=on,filename=/home/data-disk2.qcow2,node-name=system_file \ -blockdev driver=qcow2,node-name=drive_blk_disk,file=system_file \ -object iothread,id=thread0 -device virtio-blk-pci,iothread=thread0,drive=drive_blk_disk,id=virtio-disk0,serial=GAGENT_TEST,bus=pci.1 \ -netdev tap,script=/etc/qemu-ifup,downscript=no,id=hostnet0,vhost=on,queues=4 \ -device virtio-net-pci,netdev=hostnet0,id=net0,mac=00:52:11:36:4d:0d,bus=pci.2,mq=on,vectors=10 \ -device virtio-serial-pci,id=virtio-serial1,max_ports=31,bus=pci.3 \ -chardev socket,id=channel1,host=127.0.0.1,port=2222,server,nowait -device virtserialport,bus=virtio-serial1.0,chardev=channel1,name=com.redhat.rhevm.vdsm1,id=port1 \ -chardev socket,id=channel2,path=/tmp/helloworld2,server,nowait -device virtserialport,bus=virtio-serial1.0,chardev=channel2,name=org.qemu.guest_agent.0,id=port2 \ -blockdev driver=file,cache.direct=off,cache.no-flush=on,filename=/home/data-disk1.qcow2,node-name=data_file \ -blockdev driver=qcow2,node-name=drive_data_disk,file=data_file \ -device virtio-scsi-pci,id=scsi0,num_queues=4,bus=pci.4 -device scsi-hd,bus=scsi0.0,drive=drive_data_disk,id=scsi-disk0 \ -object rng-random,filename=/dev/urandom,id=rng0 -device virtio-rng-pci,rng=rng0,bus=pci.5 \ -device virtio-balloon-pci,id=balloon0,bus=pci.6 \ -device pvpanic,id=pvpanic0,ioport=0x0505 \ -device virtio-keyboard-pci,id=kbd0,serial=virtio-keyboard,bus=pci.7 -device virtio-mouse-pci,id=mouse0,serial=virtio-mouse,bus=pci.8 -device virtio-tablet-pci,id=tablet0,serial=virtio-tablet,bus=pci.9 \ -spice id=on,disable-ticketing,port=5912 -vga qxl

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