Microsoft recently released drivers via Windows Update that can prevent Vultr VPS instances running Windows from booting properly. These drivers are called:
If these drivers are installed, the server will not boot to Windows normally, and you'll instead see the Windows Recovery Environment in the web console. These steps will guide you through the process of removing these drivers.
In the Windows Recovery Environment, check whether or not your server's
C:\ drive was detected. If the drive was not detected, you'll need to load the VirtIO drivers from an ISO. To check that the drive was detected:
list volume, then
list volume output will show the detected volumes. Your servers
C:\ is normally
E:\ in Windows Recovery Environment. You're looking for a volume typically named "OS" with a size that matches the size of the VPS instance. If your drive was detected, skip to "Remove offending SUSE drivers", otherwise continue reading.
Upload and mount the VirtIO driver ISO to the VM. You can upload the drivers to your Vultr account using the following URL. Then reboot the VM, and wait for it to enter the Windows Recovery Environment. You'll see a screen asking you to pick a keyboard layout. Choose "US", then click "Troubleshoot" -> "Advanced Options" -> "Command Prompt".
Open the command line and navigate to the VirtIO ISO (which is most likely
D:\). Load the VirtIO storage drivers into the recovery environment with these commands:
drvload D:\vioscsik12R2\amd64\vioscsi.inf drvload D:\viostork12R2\amd64\viostor.inf
Run the command
diskpart, then type
list volume, then
exit. As mentioned earlier, you're looking for the "OS" volume that makes your VPS instance size, and is typically labeled
Now that you can access the server disk, it's time to remove the offending SUSE drivers.
Run this command:
dism /get-drivers /image:e:\
If your VPS instance's system volume has a letter other than
E:\, use that instead. You're looking for any drivers where the provider name is "SUSE". They'll have names matching the pattern
oemX.inf. Use this command to remove the two offending drivers:
dism /image:e:\ /remove-driver /driver:oem9.inf /driver:oem10.inf
At this point, you should be able to exit the command line. Click "Continue" to reboot the VPS instance, and it should reboot normally into Windows.