Came across a few issues in our last migration and decided to list them here for future use.
SBS 2008 keeps reseting the Exchange Proxy Settings
Set-ClientAccessServer -Identity "server Name" -AutoDiscoverServiceInternalUri https://autodiscover.outlook.com/Autodiscover/Autodiscover.xml Uninstall Exchange Server
Lync 2010 cannot sign into the service - the server is temporarily unavailable - DNS on the site did not have Office 365 entries.
Lync 2010 prompts for credentials to sign into corporate address book - problem with Live Meeting addin still being installed.
Lync 2010 displaying Outlook integration error "Lync cannot connect to the Exchange Server ... Outlook contact and calendar information will be unavailable until the connection is restored." - Again problem with the Live Meeting Addin in Outlook.
Lync 2010 Meeting Addin enabled in Outlook
[Last edited Oct 18, 2011 11:02:45]