After installing SBS Exchange 2007 SP3, OWA and Activesync is not working

This is a known issue after you install  SBS Exchange 2007 SP3. Your followings sites will be inaccessible if you have this issue.

To resolve this issue, edit the bindings for the SBS Web Applications site to select the correct certificate.

 To do this, follow these steps:

  1. Open Internet Information Services (IIS) Manager.
  2. Expand server_name.
  3. Expand Web Sites.
  4. Right-click SBS Web Applications, and then click Edit Bindings.
  5. Click HTTPs port 443, and then click Edit.
  6. Under SSL certificate, select the Sites certificate.

Note: If the above doesn’t correct the issue, reinstalling Service Pack 3 seems to fix the issue. I would appreciate any comments or feedback you may have regarding this.


  1. Mark Pratten says:

    Thank you as this helped me resolve my Issue.

    For me, “6. Under SSL certificate, select the Sites certificate.” my site was already selected.
    However, in the drop down list, it was listed 3 times.
    I changed the selection to the one at the bottom, restarted the Web App from the Action Panel and then it was good to go.

    I also had to do the same to SBS Sharepoint – Thanks again.

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