This user guide is intended to guide users with the complete working of Regain OST Recovery software. We suggest that first time users should read this user guide completely and carefully before proceeding to use the software. However, if you are an experienced user, you can use the Table of Contents to find out information pertaining to the tasks that you require to perform while using Regain OST Recovery software. You can use the table of contents to navigate through different sections of this user guide.