Start up bug
When Internet is accessible Acrobat suspend for a long time at start up. After Acrobat's windows appear all seems Ok, but after 1-2 second Acrobat doesn't respond to mouse and keyboard and Windows say that program doesn't respond. Duration of this state is few minutes. If connection to Internet is unavailable (for example cable is unplugged) no any problem observed at start up and later. This is definitely bug related to unnecessarily access to the Internet which suspend main functionalities of Acrobat. Please fix as soon as possible.
Arpit Agrawal commented
Thanks for reaching out to us. Can you Please provide the Acrobat Version you are using currently. Also I would suggest you to please upgrade to the latest Acrobat Version and then try if issue still exist. Also can you please share the exact steps which are causing this issue to you.
I have the same issue under Mac OS High Sierra 10.13.6