The issue you may have been thinking about is that whenever a windows version is installed, it will overwrite the master boot record without asking if you want that or notifying you that it is being done, at least to my knowledge. Solved my reinstalling/updating Grub.
desired to know if the install from windows would lead to a failure to grub when the restart in the middle of the install is initiated
Don't know what you are referring to here. Of course I haven't installed windows in over 8 years. I have not used Grub2 so don't wish to give advice in that regard.