Steps to Disable Adobe ID Sign-in Pop-up Window
Follow this guide to disable the Adobe ID Sign in Pop-up Window:

Step 1: Go to the Registry Editor, by opening the Start menu from the bottom left corner of the screen and searching the term Regedit.

OR

Users can also use the Run application to open the Registry Editor by simply typing Regedit in the box and pressing the Enter key to open it.

Step 2: Then open the Registry folder for the Adobe Acrobat Reader application. To access the folder enter the path in the top command box or navigate through the folders in the sidebar on the left.

To access the folder, users will be required to follow the path mentioned below:

HKEY_CURRENT_USER -- Software -- Adobe --- Acrobat Reader -- DC ---Workflows

Step 3: Next, use the right panel in the Registry Folder to create a new DWORD (32-bit) Value. For this, the user can use the mouse to right-click on the panel and select the DWORD (32-bit) Value option from the New menu.

Step 4: After this, a small pop-up will appear on the screen.

You need to enter the name and value ID sections of the window to create the DWORD32 value:
DWORD32 --- bEnableAcrobatHS
Value --- 0

Step 5: After entering the details in the required sections, the user needs to click on the OK toggle to save the changes.

Step 6: Next close the Registry Editor. After closing the Registry Editor, reboot the system to apply the changes to the Adobe Acrobat Application. After completing the steps mentioned above, the issue will be resolved.