Without Microsoft Excel Worksheet it is not possible to complete various tasks. At every workplace, it is really important application to complete various tasks. From maintaining various records to calculating and processing of data excel is playing major role. With its every release, it is advancing its features and providing users with more advanced features. Microsoft Excel has introduced one very essential feature to protect excel files from unauthorized access by introducing password implementation in both the cases to read and to modify. By employing password into your excel file you can protect your excel file from unauthorized access.