We are sorry for the inconvenience caused to you. Requesting you to please provide the below details :
1. Do you see the sign in dialog with any PDF file or with specific PDF file?
2. Can you please share a snapshot of the sign in dialog being displayed to you?
An error occurred while saving the commentMrMattiPants commented
I work as a Systems Administrator and from experience, the Users I Support have regularly shared similar experiences with me, regarding Adobe Acrobat DC Pro repeatedly asking for a Login. And when it isn't asking for a Login, it's requesting a Verification Code.
This seems to be related to the method in which Adobe Caches Login/Session Data.
There is also the Two Computer Limitation on concurrent Login Sessions. That completely needs to go, as it shouldn't matter how many concurrent Login Sessions a User has, especially if the License is supposedly attached to the User's Adobe ID (Email Address), as opposed to the Computer itself (as it used to be with Serial Numbers, in Version XI and prior).
We also have a large number of users working from Home, via Remote Desktop Services, due to the Pandemic. We have Four Load Balanced Remote Desktop Session Hosts/Servers, yet we don't use Roaming Profiles and management isn't going to implement it, simply for Adobe. As a result, our Remote Users are being asked to Login again, just about every time they Log into Adobe Acrobat Pro from the Remote Desktop Environment.
In comparison, I also pay for a Microsoft Office 365 License, which is also attached to my Email Address and yet I can initiate an Unlimited number of Login Sessions, from an Unlimited number of Computers.