Have you lost entourage calendar item from the entourage application for Mac ? The entourage is used to manage different emails accounts of the user and all the mails can be received and sent from the same application. There are also other facilities like the saving calendar entries, creating journals and notes etc. All such things are saved in its database and if the situation of lost entourage calendar has occurred then may be the database has been corrupted . The corruption of the the database can occur if the application was closed abruptly, due to application error or if there is any spam email in the database. When the database is not working then there is a possibility that you will also not able to access other items. You can use the inbuilt repairing tool and if the problem is not solved then you may have to build a new database. The data items can be restored from from the backup or you can use the entourage recovery software to recover lost entourage calendar. It will scan for the deleted data and will restore at there default places in the new database. So you should download the software now.