Windows VM stuck at 800x600

[Windows7ge]

I recently created a new Windows VM (version 1804) and no matter what I do it won't let me resize the display window to anything higher than 800x600. I tried changing the Display to Standard VGA (no change), VMWare compatible (does not work at all), SPICE (only works partially - not enough). I can't get it to change.

The strange thing is this is the first VM to behave like this. I've made VMs before this that do not have this problem so I'm very confused as to why it's misbehaving now.

A few details about the VM settings:
BIOS: OVMF (UEFI)
Disk: EFI virtio
NIC1: virtio 1gbit
NIC2: virtio 10gbit
CPU: 8 cores
RAM: 16GBs
Windows 10 pro x64 build 1804
OS Type: Microsoft Windows 10/2016

 

[dcsapak]

in our documentation (https://pve.proxmox.com/wiki/Qemu/KVM_Virtual_Machines) it is described that for ovmf, you can select the resolution in the ovmf menu (press esc during boot), which will be then used in the guest

 

[Windows7ge]

in our documentation (https://pve.proxmox.com/wiki/Qemu/KVM_Virtual_Machines) it is described that for ovmf, you can select the resolution in the ovmf menu (press esc during boot), which will be then used in the guest

I had a feeling it had something to do with that. Didn't know setting UEFI directly impacted the screen resolution.
Set it to 1600x900. Windows didn't like it at all but after a couple restarts and retries it's working correctly now. Thank you.