WSUS fails to sync with windows update after install

Hi Everyone,

I have added the WSUS role to a new 2008 R2 machine, when i try to synch to windows update through the initial config wizard i get the below error msg

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I doubt it's a proxy issue as i have the another wsus running with the same proxy settings with no problems (proxy server and credentials)

- Both servers can access the internet, and both have the same IE proxy settings.
- Both servers are running with the same WSusCertServer Service (Local System Account)

Any ideas? Thanks in advanced!