Windows 2008 R2 cross domain shared/security folder permissions

Question

I have a Windows 2008 R2 server located in the example.com domain.  I have a folder that's shared out and it needs to be accessed by a group of machines that are not in the same domain, they are part of a different domain.
I made sure to give Everyone FULL Share and FULL NTFS Security permissions but that didn't make any difference.  This used to work fine on Windows 2003 server.  Something must have changed with the way that Windows 2008 handles share/security permissions.
A temporary workaround is to create a local user on the Windows 2008 R2 server and have the users access the share using those credentials. 
I need it to work without asking the users for any credentials. 

Answer 1

Hi,
Please enable Guest account, assign Everyone group the permission to access the sharing folder and then add the Anonymous SID to the Everyone access
token.
To enable anonymous access on a local workstation or server computer
1.Open Local Security Settings. Click
Start, click Control Panel, double-click
Administrative Tools, and then double-click Local Security Policy.
2.In the console tree, double-click Local Policies, and then click
Security Options.
3.In the details pane, right-click
Network access: Let Everyone permissions apply to anonymous users, and then click
Properties.
4.On the Local Security Settings tab, click
Enabled, and then click OK.
For more information, please refer to the following Microsoft TechNet article:
Anonymous user cannot access a shared folder
http://technet.microsoft.com/en-us/library/cc755781(WS.10).aspx
Regards,
Arthur Li
 TechNet
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