Illustrator won't open .pdf files

The pdf i created in indesign refused to open in illustrator, everytime i opened it either with import or just right click and open, an empty screen is what was opening, even though i made sure illustrator compatibiility was checked on, and imported all the pages, then i figured, that some of the links were missing like pictures, once i was able to relink them, it worked fine after that. try to make sure there are no mising links on ur pdf. hope it works for you

Why do you need to open a PDF in Illustrator?

If it's to edit the PDF, do it in Acrobat. Here's a video about it: http://www.jeffwitchel.net/2015/08/edit-pdfs-like-never-before-in-acrobat-dc/

If opening the PDF (importing) does not work, the following might (but you will probably get some error messages and strange results if it does open). I do not recommend opening PDFs (that are not Illustrator PDFs), but if it's an absolute emergency and you really need to open the PDF in Illustrator, look under Tools in Acrobat and choose Edit PDF. Then click and drag across everything in the PDF to select all objects. In the Edit Using menu, choose Adobe Illustrator.