How do I remove the cached username and password from SQL Management Studio?

You may have your reasons to want to remove the cached username and password from the SQL Management Studio e.g. before handing your laptop to someone else.

The step to remove will require deleting a file but differs depending on the version of SQL Management Studio you are using.

SQL Server Management Studio 2014
Delete C:\Users\%username%\AppData\Roaming\Microsoft\SQL Server Management Studio\12.0\SqlStudio.bin

SQL Server Management Studio 2012
Delete C:\Users\%username%\AppData\Roaming\Microsoft\SQL Server Management Studio\11.0\SqlStudio.bin

SQL Server Management Studio 2008
Delete C:\Users\%username%\AppData\Roaming\Microsoft\Microsoft SQL Server\100\Tools\Shell\SqlStudio.bin

SQL Server Management Studio 2005
Delete C:\Users\%username%\AppData\Roaming\Microsoft\Microsoft SQL Server\90\Tools\Shell\mru.dat

One good news is as of SQL Server Management Studio 2012, you may delete an entry by using the tool itself without the need to delete a file. To delete, you will need to click on the 'Server name' dropdown in the 'Connect to Server' dialog. Move your mouse or use your keyboard arrow key to highlight the server to remove followed by hitting on the 'Delete' key on your keyboard. This is so convenient!