SQL Server is supported on Windows 7, but you may need to apply the latest Service Pack level to be supported. 

 

Here are the supported products and SP levels:

  • SQL Server 2005: SP3 is required
  • SQL Server 2008: SP1 is required
  • SQL Server 2008 R2 CTP3:Supported without any additional updates

The service pack for each of these products are available through Microsoft Update, as mentioned in these blogs:

Known Issues:

  • “Invoke or BeginInvoke cannot be called on a control until the window handle has been created.”  error. Details are posted here.

 

Other comments:

Additional information can be found in KB 955725, which is being updated to reflect the final Windows 7 Release.