[ Reporting ] TF255272: The database for SQL Server Analysis Services could not be verified. The problem is: TF255324: The specified database already exists. The database name is Tfs_Analysis.
That was the error I kept from reporting services during the Team Foundation Server 2010 readiness check.
You must go into SQL Management studio and connect to SQL Analysis Services Server and delete this database to proceed. This can be done by the following:
Open the SQL Services Management Studio. When the connection prompt comes up simply select SQL Analysis Services. Select your server and log in.Expand mthe cube and right click the Database and delete.