Question : Network problem

Have Network of 3 Compters:
Network : - Def.G
Computer A - - WinXP Proff - FireWall is Off and No AntiVirus
Computer B - - Win7 EnterPrise - In HomeGroup with Computer C
Computer C - - Win7 EnterPrise - In HomeGroup with Computer B

Computer A Can Ping HimSelf can ping B and C and Default Gate
Computer A Can Access to B files and C files
Computer B can Ping A, B, C can Access to C but can't to A
Computer C can Ping A, B, C can Access to B but can't to A

Answer : Network problem

Open Control Panel from the Start Menu or Windows desktop.

Open the "Network Connections" Control Panel applet.

Choose the connection on which to enable / disable sharing. View the properties for this connection by right-clicking on the icon and choosing "Properties" from the menu. If the connection is a dial-up connection, click the Networking tab to view its properties.

Ensure the "File and Printer Sharing for Microsoft Windows" checkbox is checked to enable sharing and unchecked to disable sharing for that connection. Repeat Steps 3 and 4 to check this setting for other connections.
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