I have a network consisting of three machines. All of them have Windows 7 Ultimate, One of them is a 32 bits Desktop PC, the others are two 64 bits laptops. I installed all three machines using the same configuration other than the Windows 7 x64 and x32 settings. I'll name them PC, laptop 1 and laptop 2. I created a homegroup for these three machines. I happens that folders shared from laptop 1 can´t be opened from the other two machines. I get a message saying that I don´t have permission to access them. But this laptop 1 does open folders shared from PC and laptop 2. I checked password protected sharing settings and it's turned off. What could it be?