MSSQL2008 R2 設定維護計畫時發生 The connection string format is not valid

利用維護計畫精靈建立備份時出現如下錯誤：

The connection string format is not valid. It must consist of one or more components of the form X=Y, separated by semicolons. This error occurs when a connection string with zero components is set on database connection manager.

這問題可以透過微軟的修正得到解決
詳細問題描述可參考KB2667037
或直接下載Hotfix修正KB2703282