Windows 10 is not showing in grub2 after kali-linux install

I've got Windows and Ubuntu installed. After turning off secure boot and selecting legacy boot mode, I proceeded with installation of Kali Linux from the flash drive. During the installation I have been warned that the only other OS detected was Ubuntu and it asked whether it want to store it in MBR or hard for booting unfortunately I selected Yes. Now I am unable open my windows 10. What shall I do now to show my Windows 10 in GRUB2 menu?