On one Windows 10 Pro system its not possible the get the address book in caching-mode. The GW client is 2014 R2 Sp2 HF1. All options to open address books are grey.
in online-mode all address-books are present.
The same user on a Win7 System has no problems (The GW client is here an older one 2014 R2 Sp1?, I'm not sure here.)

What's wrong here? Any ideas?

Thanks in advance for your answers.

Have a nice weekend

Dirk Emmermacher