Can I downgrade SQL Server 2008 R2 Standard To Web Edition?

We are running a SQL Server 2008 R2 Standard Evaluation version. The client has decided they don’t want to pay for full SQL Server standard and feel the Web edition is suitable. Can I downgrade SQL Server 2008 R2 Standard Evaluation to Web Edition?

Obviously I need to put a licence on it. Can I just put the Web edition licence on it and it will become a Web Edition server or does it require a re-install.

This should answer your question:

MSDN: Downgrading from SQL Server 2008 R2 Enterprise Edition (trial) to R2 Web Edition (licensed)

You only need to uninstall Analysis service before running edition upgrade. And, of course, make a just-in-case database backup.

Check more discussion of this question.

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