If you use F8 or F12 (or whatever hotkey to get the firmware's boot menu); can you then run "Windows Boot Manager" and successfully start Windows?
How was the installation done? Could you please describe how the disk was partitioned for dual-booting, and the steps taked in the installer? At this moment, I am unable to reproduce the failure. Here, dual-booting Windows works fine. ** Changed in: grub2 (Ubuntu Eoan) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1845289 Title: Grub EFI amd64 no longer start EFI/Microsoft/Boot/bootmgfw.efi To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1845289/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs