I didn't know I had acrobat installed, it came with an update or something. I don't want it at all but it changed all my normal pdf files to acrobat files which has me confused. How do I change the files back to just displaying PDF instead of an Adobe Acrobat Document? Is there a difference? Can it be fixed by removing Adobe?
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We are sorry for the trouble. Adobe Acrobat Reader DC is a freeware application used for viewing, printing, signing, sharing, and annotating PDFs For more information please look at the help page https://helpx.adobe.com/in/reader/faq.html
You may change the default PDF viewer on your computer as follows
1. Right Click on the PDF file.
2. Go to properties.
3. Under, Open With Click on 'Change'
4. Select the desired application from the list of applications and click OK.
somehow I changed all mine to google I want to change all PDF back to adobe how can I change all of them at once?
Please check the steps shared above and see if that works.
I followed your steps above to convert my adobe pdf back to preview pdf for mac but once I changed 'open with' to 'preview' I now get a message on my Mac saying that the pdf cannot be opened as it is from an unidentified developer. What does this mean and how can I fix it?
Hope you are doing well and sorry to hear that.
Please check the similar discussion, I have found on the Apple support page https://support.apple.com/en-in/guide/mac-help/mh40616/mac and see if that works.
You may also try to get in touch with Apple support for more information.