I'm getting error 0x80070043 "The network name cannot be found" when accessing \\dc01 (the root), but sometimes can (and sometimes not) access shares via \\dc01\share.
When I get that error I also didn't get the network drive on hosted that server set via Group Policy, it fails with this error:
The user 'W:' preference item in the 'GPO Name' Group Policy Object did not apply because it failed with error code '0x80070008 Not enough storage is available to process this command.' This error was suppressed.
The client is Windows Server 2012 R2 Remote Desktop and the DC server is 2012 R2 too, both on a - the same - VMware ESX host.
Then I log off and on, and no issues most of the time. Because also roaming profiles are located on the DC, also strange behaviour regarding saving and/or opening files, Outlook stationary, template files like normal.dotx and so on. Think all related to the 'network problems' that occur.
Maybe related and maybe where the problem is: When I have this issue and sometimes when I don't (the network drive is added fine) I have some strange performance issues on share/network drive: Word, Excel and PDF files opens very slowly. Offices says "Contacting \\dc01\share..." for 20-30 sec. Txt files don't have that problem.
Any tips how to troubleshoot?
Are you using the VMXNET3 network interface, if not switch to it, and replace the E1000.