I have a shared drive on a Vista Business 64 bit PC that contains our music and sound FX library. I have a couple of Macs running 10.8.4 & 10.8.5 that cannot connect to this box. I have no problem connecting from 10.6.8 & 10.7 systems, did something change with 10.8?
This has been an ongoing problems(s) on the Apple.com support board. Mulitple possible root causes. Read through the list there for starters. Maybe disable Back to my Mac?
I put in the following search criteria there.
oS x mountain lion smb