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How can DNS server in Windows SBS 2011 Essentials be repaired?

Following a server crash (due to 100% of the hard drive space being used-up), the DNS server component of Windows Small Business Server 2011 Essentials failed to come back up.  Other services appear to be OK (Active Directory, etc.).  When attempting to bring up the DNS server, the system reports "The server X.local could not be contacted.  The error was:  Access is Denied.  Would you like to add it anyway?"  If you attempt that ("add it anyway") the server name does get added as a server under DNS, but it has a red circle with a white horizontal line.  The right pane tells me to "Configure a DNS Server" but this option is greyed-out under Actions.  

I have run some tests (dcdiag /test:dns) but they return the obvious, that DNS can't contact the server.  Yet in testing the server (added as described above) using the Monitoring feature under properties, both the "simple query" and the "recursive query" pass the tests.  

The only thing I have tried so far is to remove DNS and then install it again.  The result ended-up with things exactly the same.  

Any suggestions would be most appreciated.
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PCoffinFMI
Asked:
PCoffinFMI
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1 Solution
 
Andy MIT Systems ManagerCommented:
What is the current status of the "DNS Server" and "DNS Client" windows services? Are these both running? If not what happens when you start them?

Also check event viewer - dns will log errors in there if there's a problem with it.
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PCoffinFMIAuthor Commented:
Both services are running.  The error in event viewer for DNS is 4000, "The DNS Server is unable to open Active Directory."   I came across KB 2751452 about resetting the local machine password, but the article says it applies to Server 2008 ENTERPRISE so I am reluctant to try it.
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PCoffinFMIAuthor Commented:
Turns out that the local machine password was indeed the problem.  Even though KB 2751452 says it applies to Enterprise versions of Server 2008 (of which SBS 2011 Essentials is a derivative), this fix did work and was necessary for the problem I was having with SBS 2011 Essentials.  Fortunately I am all set now.
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PCoffinFMIAuthor Commented:
Basically I found the answer myself after digging through a bunch of KB articles.  Grading A B or C is less relevant than grading "Solved" or "Not Solved" but since it's solved, I gave it an "A"
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