Handling Excel asking password in external file on excel file

Hello All,

I have some problem. so my excel file are passworded and inside excel file have some external link.
so if i open manual the excel file it will ask password ex: ‘abc’. the problem is after i enter the correct password excel, it will ask password again but it password from external excel file who linked.
screenshoot :
my question is :
a. how to remove all external link?
b. is any activity or sequence who handle this?

thank you