Why have my Z10 and BB link stopped communicating?

My Z10 won't let me access files on my computer anymore. I used to be able to go to Device Manager and select my computer then choose the files I wanted. Now it shows a blank screen with no options. I've tried to go to BB link and choose remote file access and choose specific files to share, however that doesn't work either. I have all wireless connections turned on. In BB link it even shows wireless bars coming from my z10s icon on the side. Whats happened?

Have you installed anything new like an update to your computer OS, Malware/Virus Scanner, Firewall?

I had that happen to me once. Tried all kinds of things too lengthy to go into. In the end I uninstalled both link and blend, reinstalled them both, let the drivers do their thing and no problems since.