Server 2003 File Server to be rejoined the domain

Hello all,

We have a 2003 File Server whose computer account is lost missing in the domain. So, it cannot contact the domain any more. I've tried creating a blank computer account in the domain but it didnt work.

Now, do I need to join the server to a workgroup and rejoin it to the domain? What will happen to the shares and ntfs permissions if I do so?

Regards,