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Every 5 seconds I see a Failure Audit 529 - Logon type 2 - Logon process advapi - User account is my domain admin

I have a Windows 2003 domain controller with all MS updates installed. It's running SQL, IIS, and of course all DC functions. Every 5 seconds in my security log I get a Failure Audit 529. See below:

Logon Failure:
       Reason:            Unknown user name or bad password
       User Name:                            DOMAIN ADMIN
       Domain:            OUR DOMAIN
       Logon Type:      2
       Logon Process:      Advapi  
       Authentication Package:      Negotiate
       Workstation Name:      DC SERVER NAME
       Caller User Name:      DOMAIN ADMIN
       Caller Domain:      OUR DOMAIN
       Caller Logon ID:      (0x0,0x2471B)
       Caller Process ID:      2748
       Transited Services:      -
       Source Network Address:      -
       Source Port:      -

I have searched and searched for a solution. I've heard it could be IIS, a virus, a hacker... None of those seem to lead me anywhere. The fact that it's happening exactly every 5 seconds makes me think it's a process.

I've stopped all IIS services to see if was that and I still get the event every 5 seconds. I've done complete virus scans and found nothing. I've checked all tasks running on the computer and they have the correct login info and don't run every 5 seconds. I've also looked at all services that use the domain admin account and all are started and running (so the passwords are correct).

Any ideas? I've seen the MS KB articles, I've seen the other experts-exchange articles, I've seen the articles on other sites from a google search... I post here when I've tried everything else. Thanks for your help.
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BigZWillis
Asked:
BigZWillis
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1 Solution
 
r-kCommented:
What is the process with PID 2748?
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BigZWillisAuthor Commented:
We are on the right track. Good catch... I didn't notice that until I pasted the full error. Anyway, it's the Reporting Services Service. So has to do with SQL. I've configured reporting services with the correct username and password. I just double checked the service and in the report services configuration too. However, when I stop the service the event does stop logging... I need reporting services. Any suggestions? Thanks.
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r-kCommented:
Thanks :) Glad I was able to help a bit. Did you get the problem solved?
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