Last weekend, I helped a friend clone his failing HDD to a new SSD. To make a long story short; When I built the system for him, on the HDD Windows 7 was installed with all his programs including Acrobat 9. During the free period, the system was upgraded to Windows 10 (the initial release). Acrobat was deactivated on the system and after upgrading it was reactivated. No problems and it worked fine on Windows 10, despite the fact that it is said to not be compatible. Subsequently, Windows 10 has been upgraded to the current release (1703) and Acrobat still worked fine. When I was about to clone the failing HDD to the new SSD, I went to the spot in Acrobat where it is activated/deactivated but the options were greyed out - as I understood it, no connection to the server. I went ahead and did the cloning, installed the SSD in place of the HDD and everything worked fine. Well, not everything. The following week, my friend told me that Acrobat didn't work. It is possible to create one single PDF but not a second. He is prompted to activate the software but that is not possible with the options greyed out and the option is still to deactivate, not activate. To create a second PDF, he has to shut down Acrobat and restart it. Currently, my planned action on my next visit is to remove the activation directory and files from the system. Restart the computer and run Acrobat in hope for being prompted for a serial number and automatic activation. If that doesn't solve the problem, uninstalling, cleaning using Adobes tool and reinstalling is on the agenda. I'm not at his computer and can not follow a step by step guidance until my next visit but if anyone has experienced the same or a similar problem, please, give a hint or two that possibly helps fixing the connection problem.