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Troubleshooting Active Directory Issues

There are a number of different issues that can create problems with Active Directory:

When someone has troubles and unclear as to why I usually suggest the following:
Run diagnostics against your Active Directory domain.

If you don't have the support tools installed, install them from your server install disk.

Run dcdiag, netdiag and repadmin in verbose mode.
-> DCDIAG /V /C /D /E /s:yourdcname > c:\dcdiag.log
-> netdiag.exe /v > c:\netdiag.log (On each dc)
-> repadmin.exe /showrepl * /verbose /all /intersite > c:\repl.txt
      A quick little dump repadmin /replsum > c:\replsum.txt
-> ADReplStatus
-> dnslint /ad /s "ip address of your dc"

**Note: Using the /E switch in dcdiag will run diagnostics against ALL dc's
in the forest. If you have significant numbers of DC's this test could
generate significant detail and take a long time. You also want to take
into account slow links to dc's will also add to the testing time.

When complete search for fail, error and warning messages.

DCDiag explanation

Description and download for dnslint

ADReplStatus Download and Description

If you are working with folks in a forum and will be posting log errors consider using Skydrive and then include the link to the logs in the post.



Published Monday, January 26, 2009 7:38 PM by Paul Bergson


# re: Troubleshooting Active Directory Issues @ Friday, February 15, 2013 3:22 PM

Do you still have this?  I would like to look at it.

If you download a gui script I wrote it should be simple to set and run

(DCDiag and NetDiag). It also has the option to run individual tests

without having to learn all the switch options. The details will be output

in notepad text files that pop up automagically


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