*WARNING: Failed to obtain SusClientId

I was troubleshooting one of the Automatic Update Client which was not updating from the Software Update Services Server. Scanning thru WindowsUpdate.log file, it reported a warning as below;

11/29/2005 12:48:42   Agent     * WARNING: Failed to obtain SusClientId  

So, Immediately I checked the registry for SusClientId value from HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate and I found it missing as rightly reported in WindowsUpdate.log file. Now, the question is how to re-generate SusClientId value. There might be some other useful tricks but the best I found is hitting http://windowsupdate.com and scan for the patches and when it was complete, I again checked in the registry and wow SusClientId value was re-generated and it succesfully updated from the Software Update Services Server. 

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