Create failed for Index 'ClusteredColumnStoreIndex'. Timeout expired I am creating Clustered Column Store Index in SQL Server 2014. 

I am getting error as 


  "Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding. (Microsoft SQL Server)".


I set 

EXEC sp_configure 'remote query timeout', 60000;
reconfigure
EXEC sp_configure

Row Count = 304969603
Data space = 88,812.266 MB
In Management Studio for SQL 2014, the timeout for the designers is held in Tools > Options > Designers > Table and Database Designers with a default of 30 seconds.



However, as the syntax is so simple for creating a clustered columnstore, as already suggested, you should script it rather than using the designer, eg

CREATE CLUSTERED COLUMNSTORE INDEX IX_MyTable ON dbo.MyTable ON [PRIMARY]
GO


This option won't time out, but may struggle if you don't have enough memory.  

In order to get the best out of your compression, you might also consider creating a clustered index on the table to pre-sort it, then drop it prior to creating the clustered columnstore.  YMMV.