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Active Directory Domain Services was unable to establish a connection with the global catalog.

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Hallo zusammen

Ausgangslage:
Bei einem Kleinkunden ist ein DC mit 2008 R2 im Einsatz. Der Server übernimmt sämtlich AD Funktionen.

Problem:
AD DS kann keine Verbindung zum Global Katalog herstellen. Im Eventlog steht mit der EventID 1126: "Active Directory Domain Services was unable to establish a connection with the global catalog."

dcdiag.exe meldet:
Running enterprise tests on : domXX.local
   Starting test: LocatorCheck
      Warning: DcGetDcName(GC_SERVER_REQUIRED) call failed, error 1355
      A Global Catalog Server could not be located - All GC's are down.
      Warning: DcGetDcName(TIME_SERVER) call failed, error 1355
      A Time Server could not be located.
      The server holding the PDC role is down.
      Warning: DcGetDcName(GOOD_TIME_SERVER_PREFERRED) call failed, error
      1355
      A Good Time Server could not be located.
      Warning: DcGetDcName(KDC_REQUIRED) call failed, error 1355
      A KDC could not be located - All the KDCs are down.
      ......................... domXX.local failed test LocatorCheck
   Starting test: Intersite
      ......................... domXX.local passed test Intersite

Netdom Query FSMO gibt folgendes zurück:
C:\>netdom query FSMO
The specified domain either does not exist or could not be contacted.
The command failed to complete successfully.

Was muss ich durchführen, damit ich wieder zu einem globalen Katalog komme und mein AD DS wieder einwandfrei läuft?

Besten Dank für die Unterstützung und Gruss

Sämi


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