topic Re: Can not connect to virtual hostname share windows 2008 in Operating System - Microsoft

Can not connect to virtual hostname share windows 2008

Geoff Wild — Wed, 18 Nov 2009 15:39:03 GMT

I'm installing SAP CRM on a Windows 2008 server.

I setup up a separate virtual name and ip address for SAP.

Did the same steps as on a Windows 2003 server - which works there.

This works:

\\sapsbx056\sapmnt

This doesn't:

\\vsrasm01\sapmnt

It prompts for userid and password.

Going to the ip address works.

vsrasm01 is a DNS A record (NOT CNAME).

The 2 registry changes added:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\lanmanserver\parameters
OptionalNames REG_MULTI_SZ vsrasm01

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa\MSV1_0
BackConnectionsHostNames REG_MULTI_SZ vsrasm01

Any ideas?

Re: Can not connect to virtual hostname share windows 2008

Roger Faucher — Thu, 19 Nov 2009 05:37:37 GMT

Hi:

So, vsrasm01 is a DNS Alias for the SAP IP?

Make a great day!

Roger

Re: Can not connect to virtual hostname share windows 2008

Geoff Wild — Thu, 19 Nov 2009 13:18:58 GMT

Not an alias - it's an A record.

Work around is:

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa]

"DisableLoopbackCheck"=dword:00000001

Course, that open up a SMB security vulnerability....