can't open iCloud file on my mac

Oh my god!! At last!! I had the same problem and i've tried everything except the solution that you suggested...

Only one think remains. To fix my reminders / calendar and notes sync problem.

Thank you.

My situation is similar. I saved a PDF on my Windows 7 laptop to my iCloud drive. I can open the PDF from my iCloud drive on that laptop. I can see the file in Finder on my iMac (running OS X Yosemite 10.10) in the iCloud Drive folder (PDFs) containing the file. I can even see a preview of the file in Finder. However, when I try to open it by double-clicking it, I get "The file "<filename>.pdf" couldn't be opened". If I launch Preview and try to open the file from my iCloud drive, I get the same result. I've tried logging out/logging back in to iCloud on both the Windows 7 laptop and the iMac to no avail.

Update: I finally threw in the towel and contacted Apple Support. It took an hour and a referral to tier 2 to get what turned out to be a simple solution. I unchecked iCloud Drive in my iMac settings, rebooted the iMac, and re-checked iCloud Drive in settings. After doing this, I was then able to open all of the iCloud Drive documents that wouldn't open prior to the uncheck/reboot/re-check steps.

Thanks so much for this — I was having this issue with Pages and your suggestion solved the issue!

As easy as that....works a treat. Thanks a lot.

I had that problem and was loathe to uptick iCloud drive in settings, which would delete all docs on my mac and I would have had to re-download them again. So all I did is restart my machine... and it worked! (I think I've been off Windows too long and forgotten to restart my machine when things go wrong :-D

Thanks also.

Christian

I followed your lead and uninstalled cloud and then reloaded it. Still won't open the spreadsheets I can open on my MacBook Pro.