Cannot open pdf files in Reader requires sign-in

Hi Enlightened_Flutter44c1,

Thank you for reaching out, and sorry for the trouble caused.

Please try reinstalling the application using the steps suggested below: 

• Uninstall the application and run the cleaner tool from the following link: Acrobat Cleaner tool.

• Reboot the machine. 

• Install Adobe Acrobat from the following page: Install Acrobat Reader. 

Let us know if you still experience the issue.

Thanks,

Meenakshi