Why can't write Windows Boot Manager into grub gui?

OS info:
Code:uname -a
Linux debian 4.19.0-17-amd64 #1 SMP Debian 4.19.194-1 (2021-06-10) x86_64 GNU/LinuxThe grub destroyed after resetting cmos,i have to rescue grub with live usb,enter into debian live
Code:sudo grub-mkconfig -o /boot/grub/grub.cfg
Generating grub configuration file ...
Found background image: /usr/share/images/desktop-base/desktop-grub.png
Found linux image: /boot/vmlinuz-4.19.0-17-amd64
Found initrd image: /boot/initrd.img-4.19.0-17-amd64
Found linux image: /boot/vmlinuz-4.19.0-16-amd64
Found initrd image: /boot/initrd.img-4.19.0-16-amd64
Found Windows Boot Manager on /dev/sda2@/efi/Microsoft/Boot/bootmgfw.efi
Found Debian GNU/Linux 10 (buster) on /dev/sdb1
Adding boot menu entry for EFI firmware configuration
doneYou can see Windows Boot Manager was founded ,and it was written into /boot/grub/grub.cfg.
Attachment 36774
No Windows Boot Manager show up when to reboot my pc!
Attachment 36775
Here is the whole grub.cfg,i rename grub.cfg as grub.cfg.txt in order to upload it.
Attached Thumbnails Attached Files

grub.cfg.txt (11.4 KB)