Execute button greyed out after making a

Hi Charles,

Based on your description, your !Execute button grey out after creating a new table in SQL Server management studio(SSMS).

This issue might be caused by that something of SQL Server is corrupted, please right-click SQL Server express in control panel and select repair to repair your SQL Server express.

However, if this issue still occur, please uninstall SSMS and re-install it again, then check if your  !Execute button work properly . If you use SQL Server express 2008 or later, you can uninstall SSMS following the steps in this similar thread, while if you use SQL Server express 2005,you can uninstall SSMS using these steps below.
1.Click Microsoft SQL Server express and select change via control panel.
2.On the component selection page, select workstation components, then click next.
3.On the change or remove Instance page, click change Installed components.
4.Expand client components, click management tools, and then select entire feature will be unavailable.

Besides, when you re-install SSMS, you only need to select Management Tools feature in SQL Server setup wizard.

Best Regards,
Ice Fan