Installation and Upgrade > Windchill Upgrade > Before Upgrading > Unsupported Scenarios > SQL Server 2008 R2
  
SQL Server 2008 R2
SQL Server 2008 R2 is not supported for Windchill 11.0. If your source system is set up in a SQL Server 2008 R2 environment, you must perform the following steps before upgrading to Windchill 11.0:
1. On the source system, the version of Windchill must support SQL Server 2012 or later versions. If the current release does not support SQL Server 2012 or later versions, you must update to the latest release of the Windchill version installed on your source system. Refer to the following table for details about which release to update to:
Windchill Source Main Version
Releases that DO NOT support SQL Server 2012 or later versions
Update Windchill to this Release
10.0
F000, M010, M020, and M030
M050
10.1
F000 and M010
M050
For more information about the update procedure, see Planning Before Updating an Installation.
2. Upgrade your SQL Server Instance to 2012 or a later version. For details, refer to the MS SQL Server documentation.
3. Execute the Collation Conversion Utility to change the existing database collation from "SQL_Latin1_General_CP1_CS_AS" to the new, supported collation "Latin1_General_100_CS_AS_SC".
For more information about the Collation Conversion Utility, see Changing SQL Server Database Collation.