Domain controller does not find GC

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Guest

Error that I’m having is :

Event Type: Error
Event Source: NTDS General
Event Category: Global Catalog
Event ID: 1126
Date: 25.08.2005
Time: 09:01:23
User: NT AUTHORITY\SYSTEM
Computer: DC4X
Description:
Unable to establish connection with global catalog.

It does not help where i put GC. On same server on different server, on all
servers and so, it does not find GC ?
 
This sounds like a dns issue. Designate a DC as a GC then run netdiag /fix
(This will build all dns records for the DC you run this on). Next open up
your dns server's AD domain and examine the following for gc records.

DNS Server / Forward Lookup Zones / domain.com / _tcp
There should be a _gc record for each gc

DNS Server / Forward Lookup Zones / domain.com / _sites / (Site where your
gc exists) / _tcp
There should be a _gc record for the gc

IF this there correctly try doing the same for the rest of the dc's and let
replication run its course and see if this helps.

--


Paul Bergson MCT, MCSE, MCSA, CNE, CNA, CCA

This posting is provided "AS IS" with no warranties, and confers no rights.
 
Yes it is DNS problem. Only one GC was in _mcds under GC section. I run
ipconfig /flushdns and than Ipconfig /registerdns and the record did not
shown in root domain in_mscds zone. I restart LOCAL DNS server with no help.
Than I set up Network configuration to use root dns for primary DNS server, I
run ipconfig /registerdns and the record show up, than I change network
configuration back. I tried several manual zone transfers, but updated record
did not show up. It take while, so that the record show up. I will se if ther
are going to be any errors in logs. I will restart server in the evening.

And I so that some sites are market as unknown in these server. I thing it
is DNS problem related to some network errors..
 
Make sure to run netdiag /fix (Or reboot the GC).


Try running netdiag, repadmin and dcdiag. Look for fail, error and warning
errors.

If you don't have the tools installed load them from your install disk.

d:\i386\adminpak.msi (Server tools for remote management of servers)
d:\support\tools\setup.exe (Server Utilities)

Copy the following to a cmd file and run look for error, fail and warn
within the reports. Post any errors you can't figure out. make sure you
modify DC_Name to the name of a dc in your domain.

@echo off

c:
cd \
cd "program files\support tools"

del c:\dcdiag.log
dcdiag /e /c /v /s:DC_Name /f:c:\dcdiag.log
start c:\dcdiag.log

netdiag.exe /v > c:\netdiag.log
start c:\netdiag.log

repadmin.exe /showrepl dc* /verbose /all /intersite > c:\repl.txt
start c:\repl.txt


See for more details

http://www.microsoft.com/technet/pr...Ref/1d4ce93c-54f2-4069-a708-251509c38837.mspx

--


Paul Bergson MCT, MCSE, MCSA, CNE, CNA, CCA

This posting is provided "AS IS" with no warranties, and confers no rights.
 
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