Sharepoint 2010 Web databases – Preparing site wait a moment and refresh your browser
By peter.stilgoe
If you are trying to deploy a Sharepoint 2010 site template based on a Access Web Database & you see the following error:
Preparing Site …
Someone has recently made changes to this site and the site is being updated. If the site remains offline for an extended period of time, contact a site owner.
Wait a moment and refresh your browser
You probably havent set up your Access service application:
Create a Access Service Application
(Central Administration –-> Manage Service Applications –-> New –-> Access Services)
Started the Access Database Service
(Central Administration –-> Manage Services on Server)
Now open the SharePoint 2010 Management Shell and enter:
enable-spSessionStateService –DataBaseName <NameOfYourNewDatabase>
This creates a session state database and turns on the session state service.
Sharepoint 2010 , Sharepoint Access Services 


November 2nd, 2010

Thanks, this info helped. BTW, my session state service already existed (and was started), so I skipped the last step.
Central Admin > Manage Service Applications > SharePoint Server ASP.NET Session State Service > Status = Started.
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