you can try:
Windows(7):
gpedit.msc -> Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options:
-"Network access: Shares that can be accessed anonymously", add the share name
-"Network access: Do not allow anonymous enumeration of SAM accounts and shares", disabled
-"Let Everyone permissions apply to anonymous users", enabled
gpedit.msc -> Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> User Rights:
-"Deny access to this computer from the network", remove Guest
-enable the Guest account
-set Everyone to have access to share and file security permissions.
Xerox3325:
domain: workgroup name