In the Mac permissions dialog box, click OK.
Problem
With macOS 10.15 Catalina, a new permissions dialog is displayed whenever Acrobat or Reader tries to read or write any folder on the drive.
Solution
To allow Acrobat or Reader to write or read the folders on the drive, do the following.
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The Security Preferences dialog is displayed. Choose to enable the folder permissions for Acrobat or Reader.
If you click, Dont' Allow, the following dialog is shown by Acrobat or Reader.
To allow Acrobat or Reader to read or write folders on the drive, click OK. Choose to enable the folder permissions for Acrobat or Reader in the Mac Security Preferences dialog.
If you click Not Now, Acrobat or Reader access to folders on your drive will be blocked and the information saved in the Mac security preference.