Acrobat Pro DC won't open files on Mac

I had the same problem, rebooted, updated DC Pro, ect.

Problem was for some reason the Adobe window was hidden.  Was supper small, on the edge of the corner of my desktop. I had to scan my desktop looking for something out of place, then found something, expanded it and - there it was.  hope this helps.

I had the same problem, and after much research, figured out a solution that works for me. I use a second larger monitor connected to my MacBook Pro & the files were somehow not opening on the connected monitor. I went to Preferences>Full Screen> Which Monitor to use:>Biggest

Now all the files that wouldn't open before do.

Ok, I have the same issue.  I tap on a file, Adobe opens the program, yet not files are displayed on the screen.  Then I read on this blog to tile the windows.  So I did.  Window>Tile>Vertical.  Bam!  They all showed up.  I was shocked.  No uninstall.  No sign in.  Just Tile the windows.  To test the validity, I closed adobe and went back to the file, tapped it, and it all worked.  Good luck.

I didn't ask whether the documents showed on screen but whether they were listed in the Window menu. So am I right that your problem is different because you can't even use the Window menu?

What exactly do you mean “spins”? Please answer too my second question.

SO, what happened when you tried that? Did the "open" (invisible) documents show in the Window menu before and after?

I did try Window > Tile > Horizontal but this option was disabled. I found a solution that is either specific to me or it's happening to everyone. Instead, I tried, Window > Minimize All Windows and when I did that, I saw a sliver of something move down to the Mac's dock. I then maximized and saw where it went. I was able to get my mouse to turn to a resize handle to reveal the Acrobat Home menu! My issue was that I have dual monitors and Mac apps don't expand across two monitors, so this sliver of the Acrobat launch screen was only on one monitor. I'm so happy this fixed the issue. Maybe the home menu is loading by default in a very small size? Well, maybe this is what is happening to others. Good luck!

We have the exact same problem on multiple machines. Have contacted Adobe support multiple times, but they never help and never call us back.

I had the same problem and finally worked out that a "hidden" window on my MacBook was waiting for me to sign in to my Adobe account to activate the software.  Try to open Acrobat Pro again and tile your windows to see if that's the issue.

You need to elaborate the problem so that somebody can help you that if you are getting any error code or not. if you have checked the default program for opening the pdf files.