Thank you for your response and apologies for my vague query.
Installed Reader DC a few days back as I needed to validate a form. Couldn't get Mac OS's Preview to validate the document, hence thought of trying Adobe Reader. Adobe worked perfectly with that document and so made it my default app for all PDF related operations. After some time I noticed that only a few PDF files were opening via Adobe Reader, while most were completely unresponsive. These PDF documents never had an issue prior to Adobe installation.
Tried to resolve the issue with Dropbox customer support, spent 1.5 hours but was later told to try with Adobe customer support. No help there as well as I was told Adobe doesn't provide support for free software users. Hence this post.
I use Dropbox for all my documents and other computer related stuff. Don't save anything on the MacBook hard disk.
All documents are synced to Dropbox cloud.
Attaching screeshots for better understanding.
Above- All files with the red Adobe logo are completely unresponsive, any number of double clicks or right clicks & open with Preview doesn't help. Nothing opens, no error message even.
Above- On dropbox site, some files have become .icloud format. Tried saving one file (top one), as guided by dropbox support, to .pdf but even then the file didn't open.
After I click the .icloud file, I get an error message which reads; '.icloud files can't be previewed.'
This .icloud file, when I locate it on my dropbox folder on the Mac, it is of the first kind (just big red Adobe logo and completely unresponsive on double clicks).
Never faced an issue earlier, only post Adobe Acrobat Reader DC installation. I save everything as PDF files and years worth of files and data are unresponsive now. Makes me nervous just thinking about it.
Haven't tried unstalling Reader DC yet as I am scared that post the uninstall the files still won't open.
Just checked, unable to drag Adobe Reader to the trash to delete the app
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