Hello Folks,
I wonder if anybody there could show me the way to get out from this mess!
I've got plenty of messages in System event viewer about:
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1.
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Log Name: System
Source: Microsoft-Windows-Kerberos-Key-Distribution-Center
Date: 14/10/2011 12:18:45
Event ID: 11
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Computer: ALZ.ag.local
Description:
The KDC encountered duplicate names while processing a Kerberos authentication request. The duplicate name is MSSQLSvc/ALZ.ag.local:57132 (of type DS_SERVICE_PRINCIPAL_NAME). This may result in authentication failures or downgrades to NTLM. In order to prevent
this from occuring remove the duplicate entries for MSSQLSvc/ALZ.ag.local:57132 in Active Directory.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Microsoft-Windows-Kerberos-Key-Distribution-Center" Guid="{3FD9DA1A-5A54-46C5-9A26-9BD7C0685056}" EventSourceName="KDC" />
<EventID Qualifiers="49152">11</EventID>
<Version>0</Version>
<Level>2</Level>
<Task>0</Task>
<Opcode>0</Opcode>
<Keywords>0x80000000000000</Keywords>
<TimeCreated SystemTime="2011-10-14T10:18:45.000000000Z" />
<EventRecordID>354972</EventRecordID>
<Correlation />
<Execution ProcessID="0" ThreadID="0" />
<Channel>System</Channel>
<Computer>ALZ.ag.local</Computer>
<Security />
</System>
<EventData>
<Data Name="Name">MSSQLSvc/ALZ.ag.local:57132</Data>
<Data Name="Type">DS_SERVICE_PRINCIPAL_NAME</Data>
<Binary>
</Binary>
</EventData>
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2.
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Log Name: System
Source: Microsoft-Windows-Security-Kerberos
Date: 14/10/2011 11:38:44
Event ID: 3
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Computer: ALZ.ag.local
Description:
A Kerberos Error Message was received:
on logon session
Client Time:
Server Time: 9:38:44.0000 10/14/2011 Z
Error Code: 0x7 KDC_ERR_S_PRINCIPAL_UNKNOWN
Extended Error: 0xc0000035 KLIN(0)
Client Realm:
Client Name:
Server Realm: ag.local
Server Name: MSSQLSvc/ALZ.ag.local:57132
Target Name: MSSQLSvc/ALZ.ag.local:57132@ag.local
Error Text:
File: 9
Line: efb
Error Data is in record data.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Microsoft-Windows-Security-Kerberos" Guid="{98E6CFCB-EE0A-41E0-A57B-622D4E1B30B1}" EventSourceName="Kerberos" />
<EventID Qualifiers="32768">3</EventID>
<Version>0</Version>
<Level>2</Level>
<Task>0</Task>
<Opcode>0</Opcode>
<Keywords>0x80000000000000</Keywords>
<TimeCreated SystemTime="2011-10-14T09:38:44.000000000Z" />
<EventRecordID>354935</EventRecordID>
<Correlation />
<Execution ProcessID="0" ThreadID="0" />
<Channel>System</Channel>
<Computer>ALZ.ag.local</Computer>
<Security />
</System>
<EventData>
<Data Name="LogonSession">
</Data>
<Data Name="ClientTime">
</Data>
<Data Name="ServerTime">9:38:44.0000 10/14/2011 Z</Data>
<Data Name="ErrorCode">0x7</Data>
<Data Name="ErrorMessage"> KDC_ERR_S_PRINCIPAL_UNKNOWN</Data>
<Data Name="ExtendedError">0xc0000035 KLIN(0)</Data>
<Data Name="ClientRealm">
</Data>
<Data Name="ClientName">
</Data>
<Data Name="ServerRealm">ag.local</Data>
<Data Name="ServerName">MSSQLSvc/ALZ.ag.local:57132</Data>
<Data Name="TargetName">MSSQLSvc/ALZ.ag.local:57132@ag.local</Data>
<Data Name="ErrorText">
</Data>
<Data Name="File">9</Data>
<Data Name="Line">efb</Data>
<Binary>3015A103020103A20E040C350000C00000000001000000</Binary>
</EventData>
</Event>
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lastly.
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