Recently I have started working on a Umbraco v7 website and as a first step, I wanted to create a local database by restoring it from a backup file, and after creating the DB and create a new Login for the Umbraco v7 database, I started to see the following problem; After doing some investigation, I realised that other people had a similar problem with their Umbraco V7 local websites. After trying some of the suggestions, I ended up doing some more investigation and came up with the following solution; Right-click on your localhost and select Properties Go to the Security page and select "Server authentication" as "SQL Server and Windows Authentication mode" Hit OK. Go to Services and find your SQL Server service and restart it. You should be able to see your website now. If you still have problems, check your local setup and permissions. Further details are below, hope this helps somebody else.