Server 2012R2 Error 64

[NewBoy]

Hi Guys,

 

I have an issue with Server 2012R2, all the latest updates are installed and it is the only server in the domain running all the usual services. When trying to create a GPO in Group Policy Management I receive the following error,

 

'The Specified Network Name is No Longer Available'

 

so then I typed in the following to list the server shares '\\Server2012' I can see all shares but on trying to connect to any including Sysvol and Netlogon I receive the following error; '\\Server2012\Sysvol is not accessible, you may not have permission to use this network resource. Contact the administrator of this server to find out if you have permissions'

 

I am using the administrator account so wondered if it maybe a profile issue so created another administrators account but the errors remained the same ??? I have checked DNS and that is fine as well as the FSMO roles and the server has all of them. This server replaced an old 2008R2 server some 6 months or so back which was DCpromo properly and has been fine until recently so really confused at the moment. I can ping the server and run NSLookup etc and I have also done a malware scan which has come back clear.

 

Does anybody have any suggestions that may help please.