Multiple pdf's not open in same window - Reader DC

[BR4TO92]

Hello guys, i have a problem with my Acrobat Reader DC (free version). On Windows 8.1, despide the "Open new documents in the same window" option is checked (Preferences - General), however, when i'm opening multiple pdf's, there are as many windows as the numbers of pdf's opened in the taskbar (big buttons - always combine), as if there are multiple instances of Adobe Reader, despide the documents are actually shown in tabs inside it (see the difference in the printscreen between Adobe Reader and Notepad++ which also has multiple documents opened inside it). How can i solve it? It's a bug? Thanks!

[Bernd Alheit · Accepted solution]

It is a feature.

[BR4TO92]

What do you mean? It's not supposed to open just a single instance?

[Bernd Alheit]

It is not a bug.

[sofiaislasj]

I have the same issue. I hope Adobe can change that because that is what the checkbox says!

[Bernd Alheit]

What checkbox?

[sofiaislasj]

The one that says "Open new documents in the same window"

[Bernd Alheit]

You must relaunch Acrobat Reader after changing this option.