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Cross domain trust relationship doesn't work?

These 2 domains are res.fiestafood.local and resjaprest.local. Initially, they are separated. Now, I configured them to trust each other. On AD domain and trust mmc, I can validate incoming and outgoing trusts on both sides without problem.

Now, I created a share - shareA on domain A. I granted a userB from domain B full access. In security tab, I can browse and granted the above user without problem. The problem is, when this user B is logon to domain B, and try to access to shareA, the following error message prompts:

   \\ServerA is not accessisble. You might not have permission to use this network resource. Contact the administrator of this server to find out if you have access permission.
    No enough server storage is available to proceed this command.

Any suggesstion?  This is using windows 2003 R2
Active Directory

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Last Comment

8/22/2022 - Mon

Get the user to browse to the FQDN of the server, e.g.


Since 'ServerA' is not a full FQDN, and only the user's OWN DNS domain name will be appended to it, simply 'ServerA' will fail. Use the full FQDN and provided DNS is set up correctly (which it sounds like it is), then this should work.


Alternatively try with IP address, that is \\IPADRESS of ServerA\shareA. The reason being the DNS of the both the domains might not have been updated.

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HI Balack - when you say 'The suggested action solved the problem.' - which suggestion?
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Walt Forbes

after rebooting DCs of both domains.