Change default login SQL Server Management Studio (SSMS)

Some time ago I created a new login to my local SQL Server 2008 Express database server, called "sa_readonly". Now everytime I start SQL Server Management Studio, it displays the "Connect to Server" form, with the default login set to "sa_readonly". This login doesn't exist anymore, and I want to change the default login to "sa". How do i do that?

How do I reset SSMS default?

Well, the solution to rest the SSMS layout is very simple. One can do it in split seconds. To restore the default configuration, on the Window menu, click Reset Window Layout.

You can simply highlight the server name and click DEL on keyboard, same thing for the logins

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