What should I do in order to install Windows 10 after I already installed Ubuntu (>= 18.10)? both should work in UEFI mode
GParted shows this after failed Windows installation attempt (/dev/nvme0n1p 4-7 were created at install moment):
At installation moment I get:
Windows detected that the EFI system partition was formatted as NTFS. Format the EFI system partition as FAT32, and restart the installation