[IT4MD]

This works for about 95% of the documents.

For the rest you need a purpose built reader. Often Sumatra or other open source readers will work with the more complex functions in PDFs (signing, bill processing, etc).

I have Acrobat installed on my corp laptop, but I use Sumatra rather than Acrobat, because I like my reader to simply be a reader instead of a 13GB bloated piece of garbage. I'm also a big fan of my reader not crashing at the slightest breeze.