Hi. I use Acrobat DC regularly. Currenlty I am unable to Undo ro Redo anything. The options are greyed out. I opene document, and am using the Edit PDF option. I would appreciate any suggestions. - thanks.
Would you mind sharing the exact version of Adobe Acrobat DC you are using? To check the version go to Help > About Acrobat and make sure you have the recent version 22.1.20085 installed. Go to Help > Check for updates and reboot the computer once.