GRUB disappears from UEFI boot entries after booting Windows (Ubuntu + Windows dual boot)

Every time I boot into Windows (11/10) on my dual-boot system, the GRUB entry vanishes from the UEFI boot menu. I reinstall GRUB from a live Kali USB, and the entry comes back. Then I reboot into Windows, and—poof—it's gone again. Even mounting the EFI partition shows no GRUB files. **System Details:** Motherboard: Gigabyte B550M DS3H BIOS Version/Date: American Megatrends International, LLC. F2, 22-03-2024 Distribution: Kali Linux (UEFI install) Disk Setup: NVMe drive with GPT partitioning EFI partition: FAT32, mounted at /boot/efi Windows: UEFI install, Fast Startup OFF, Bitlocker OFF, Secure Boot OFF **What I've Tried:** Reinstalled GRUB using:

sudo grub-install --target=x86_64-efi --efi-directory=/boot/efi --bootloader-id=kali
sudo update-grub

Checked and modified UEFI entries with efibootmgr; GRUB shows up but disappears after rebooting Windows. Disabled Windows Fast Startup, Secure Boot, and Bitlocker. Mounting the EFI partition shows no GRUB or /EFI/GRUB content after disappearances. After mounting the EFI partition /dev/nvme0n1p1, in a live system I see only the /EFI/Microsoft folder. /EFI/kali or grubx64.efi is completely missing. What is removing the GRUB entry/EFI files? Is it Windows itself, firmware updates, or something else? How can I make the UEFI entry for Kali persist through Windows boots? Are there any EFI tweaks or BIOS settings I’m missing?