Links created with Acrobat 1.1

I have a 600 page (music) pdf  book with an index. Click on a page number and it takes you to next page. Click on the title you go to the next alphabetical page. Click on my name and you return to the index. In 1994 I put this book and 6 others on Cd. They worked perfectly. Now Windows 10 - Each time a link is selected a question pops up "Do you trust this link?" It is aggrivating and makes the whol concept useless. I tried changing FILE ATTRIBUTED. No Luck. I don't get it. Do you? Like, HELP! Thank you.