How to install breach guard when microsoft says its as it is not one of their apps it cant be insta

Hi Andy,

We're glad to look into this & help you.
As we're uncertain about the exact message that you receive, please share us the screenshot of it for better clarity.

When I down loaded Breachguard and chose to install, Microsoft comes up saying that as it isn't one of their apps they wont install but instead look for one of theirs. Tell me whose ruddy laptop is this? Why
should microsoft stop me from installing what I like? 
Please, any suggestions would be most useful!
Thanks Andy

Hi Andy,

We're glad to look into this & help you.
As we're uncertain about the exact message that you receive, please share us the screenshot of it for better clarity.