Opening PDF's in new tabs instead of windows is not working in Adobe Acrobat Reader DC?

I have Adobe Acrobat Reader DC (Continuous Release), Version 2019.021.20056

I've the open in tabs instead of windows feature selected, yet whenever I double click and open a PDF, it opens in a separate window, rather than a separate tab.

I'm on Windows 10 Pro (64bit)

4 Answers

If you wish to use Tabs within the Adobe session, you need to use File, Open inside Adobe. Double clicking a file outside of Adobe results in a new Adobe session

Open Settings > Apps > Under Apps & features find Adobe Acrobat DC and click on it >> then click on Modify > Select Repair and click next and proceed.

This should fix it.

Does not happen in an older Pro version, so this is probably a new bug in Acrobat Reader.

Some suggestions:

• See if an update to Acrobat Reader is available
• Uninstall completely Acrobat Reader using Revo Uninstaller Freeware, then reinstall
• Check the command used to launch Acrobat in registry key
  HKEY_CLASSES_ROOT\acrobat\shell\open\command
  My parameters are /u "%1"
• Signal the problem to Adobe as indicated in the Adobe Help Center
• Workaround : Use an alternate PDF reader, for example Foxit Reader.

Working here with same DC version & Win10 (Enterprise LTSB v1607). My General screen looks the same too.

1. Have you tried unchecking Open documents as new tabs in the same window... clicking OK, close all Adobe windows, open again, re-check that & test?
2. Have you tried reinstalling or repairing the installation?
3. What happens when you double-click a second PDF file? I've had some users where nothing happens that I am still troubleshooting