How to restore to a different database in sql server?

Question

I have a backup of Database1 from a week ago. The backup is done weekly in the scheduler and I get a .bak file. Now I want to fiddle with some

Answer 1

• I have the same error as this topic when I restore a new database using an old database. (using .bak gives the same error)

• I Changed the name of old database by name of new database (same this picture). It worked.