Trying to access a file server running on Windows 2008 R2 Enterprise from a client which is Windows 2003 64 Bit SP2 using the below method ,
\\<ipaddress-of-win2008 server>\sharename - Gives the error message
\\server IP\sharename is nto accessible. You might not have permission to use this network resource. Contact the administrator of this server to find out if you have access permissionsThe specified network name is no longer available
-Shibi Keyan