Important This section contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
322756�
How to back up and restore the registry in Windows
Resolution for cause 1
To resolve this issue, download and install SP1 for the 2007 Microsoft Office Suite. To do this, visit the following Microsoft website:
Resolution for cause 2
To resolve this issue, create or modify the Autodiscover CNAME record or the Autodiscover SRV record. For example, add the following CNAME record to point to the Office Online hosted messaging services:
North America Datacenter:�
Autodiscover.companySMTPNamespace.com CNAME AutoDiscoverRedirect-red001.mail.microsoftonline.com
Europe, the Middle East, and Africa (EMEA) Datacenter:�
Autodiscover.companySMTPNamespace.com CNAME AutoDiscoverRedirect-red002.mail.emea.microsoftonline.com
Asia Pacific (APAC) Datacenter:�
Autodiscover.companySMTPNamespace.com CNAME AutoDiscoverRedirect-red003.mail.apac.microsoftonline.com
Note You create or modify the Autodiscover CNAME record or the Autodiscover SRV record together with the DNS host provider.
If you cannot see the free/busy information that is being exchanged between Office Online and the on-premises Microsoft Exchange server in a coexistent environment, migrate the company information to the Office Online environment.