SSMS 2008 with a local database.
I can't rename any column of any table. It says: Unable to rename column from ... to ... Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding.
I tried to rename the column using sp_RENAME procedure. No result. It just keeps trying, the progress icon moves but it takes infinite time.
I tried to truncate the table, but again, the query starts and never finishes.
I can change rows and values manually if I open a table.
Try restart your SQL Server Instance.