I'm also having the same problem, I want DynDNS updater to run at startup,
but it appears that this app need administrator privileges so Windows
Defender bloks it. I couldn't find a way to explicit say that I trust this
software to run at startup, anybody have an idea how to do that?
I notice it exists in Windows Defender a tool witch is allowed software, but
i could find a way to add the software there.
Any help will be truly appreciated!