The path link needs to be exactly the same on the PC. It's an absolute link, not a relative one. Often difficult to accomplish.
thanks for your response. I have the InDesign file on a USB Flash drive that has all the paths directly on the Flash drive, so when you open up the PDF it should be all right there. Could it be becasue of security settings? Had to make the read-only?
Windows and Mac see the drive with a different name. Absolute links will not work. If something would work is, if you have all files in the same folder as your pdf. But I doubt that it will work.
Have you ever considered to make a PDF Portfolio instead, where all PDF files are included as subdocuments?
I agree with Willi. It's extraordinarily difficult, if not impossible, to have matching paths on Mac and Windows, which is what that kind of link requires.
The links to open PDF files from within a PDF can be edited and re-linked to the proper folder in Adobe Acrobat version XI after the PDF has been exported out of InDesign CC. In the Tools panel, click Add or Edit Link, double click the link to open up Link Properties and then in the Actions tab, delete the action that is currently there. Then in the drop down for selection Action, choose Open a file and add it into the actions list selecting the sub folder and file that you want to open, then save the PDF.
It seems like this method of editing the link through Adobe Acrobat creates an absolute path that's recognizable on both Mac and PC. The link will work as long as your main PDF and all linking sub folders and files are together in the same root location.