Event ID - 6641

Event Id6641
SourceOffice SharePoint Server
DescriptionThe SSP Timer Job Distribution List Import Job was not run.
Event InformationAccording to Microsoft:

Check the SSP credentials account, It should be a domain account with Sufficient permissions.

The SSP credentials can be viewed in Central Admin as follows:

  1. In Central Admin, on the left side menu, click "Shared Service Administration".
  2. On the "Manage This Farm's Shared Services", expand the list menu for the SSP, and click "Edit Properties".
  3. In the Edit Shared Services Provider" page, the account is listed under "SSP Service Credentials".
The account should be a domain account with sufficient permissions,as listed in article Plan for administrative and service accounts.

As per Microsoft Sharepoint TechCenter Forum :
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I have run into this problem even when I have not changed the password. I tried the fix to add the service account to the backup operators group and that did not completely fix the problem. Additionally, I have notice that I have had a lot of other mysterious SharePoint Server Errors What you need to do to correct this problem is:
  1. One of Microsoft's best practices is to make sure that the application pool account for your SSP and your service account for the SSP are the same account.
  2. Make sure to add this account to the backup operator's local group on all your MOSS servers.
  3. If you are using Kerberos authentication for your web applications make sure you set your service name principle account for you ssp on you MOSS application server. In order to complete this operation you must install Window support tools from your Windows server installation files under support>>tools>>supporttools.msi. Once you have installed the support tools go to start>>All programs>> Windows support tools>> command prompt.
    setspn.exe -A HTTP/name_of_ssp_address domain\appication
    Assume your site address is ssp, your domain is sharePoint, and your application pool account is svc_ssp.
    Run these commands setspn.exe -A HTTP/ssp SharePoint\svc_ssp
    (Run this Command) setspn.exe -A HTTP/ssp.sharepoint.com SharePoint\svc_ssp (Run this command)
    If you are using Kerberos authentication on any of your web applications you must run these commands for the web applications to function properly including your central administration site.
  4. Check your system event logs on your MOSS server for any DCOM errors. You will notice your DCOM errors are associated with your application pool accounts. Add these acounts to the IIS WAMREG admin service. Make sure the accounts have local launch, remote launch, local activation, and remote activation.
  5. Next stop your Office SharePoint Server Search through central administation>> operations>> Services on Server.
  6. Then go to central administration>> operations>> service accounts. Click on web application pool. Then under web service choose Windows SharePoint Service Web application. Next under application pool, choose your Shared Service Provider application pool account. Under configurable you will notice that it populated your application pool account. Now re-enter your password and click ok.
  7. Login into all your MOSS servers and run iisreset /noforce.
  8. Go back to central administation>> operations>> Services on Server and restart your Office Server Search.
  9. Then go to central administation>>Application Management>> Manage this Farm's Shared Services. click the drop down on the default SSP and click edit properties. In the SSP service credentials enter username and password. In the index server catagory select your index server and then click ok. Make sure you wait about 5 minutes.

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Reference LinksPlan for administrative and service accounts

Shared Services Security in Setup and Administration

Event ID Errors: 6398, 6482, and 6641 for Share Point

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