Unified Messaging (UM) is the integration of various communications media and electronic messaging technologies into a single store, while giving full access from different devices. The unified messaging products for Exchange Server have the capability to store all types of messages (like voicemails, faxes, e-mails etc.) in one system. The UM solutions for Exchange Server require Exchange database to be intact in order to get started. There can be situations when a unified messaging utility may stop. Apart from other reasons, you can deduce this behavior for database corruption. In such situations, if you don't have any valid data backup, an EDB Recovery solution is required.

The following scenario will help you understand such problems better. Consider you deploy a Unified Messaging system in your Exchange Server environment. You observe that the UM utility cannot start. Later, you observe that Microsoft Exchange database is also unable to mount and reports an error, such as below:

The database files in this store are corrupted. ID no: c104173b Exchange System Manager.

You cannot mount the Exchange database at even further attempts.

Cause

The prime reason for the above error to occur is corruption of Exchange Server database.

This issue can also occur due to presence of old transaction log files in the folder.

Solution

You should try these solutions to overcome the existing problem:

1. Execute Eseutil /R command to replay the transaction log files and perform soft recovery 2. Remove the transaction logs from the folder and try to mount the database again. You can successfully rerun the UM utility once the database mounts 3. Check for the database backup. If available, restore 4. Run Eseutil /P command, followed by Eseutil /D and Isinteg commands. But this command deletes data and hence, is less recommended 5. Use an EDB Recovery Software to repair the corrupted database and extract the valuable data

An Recover EDB application uses a powerful, yet safe, set of algorithms to repair the corrupted Exchange database. These repair applications are easy to install and use with interactive user design. You can use these utilities in any case of Exchange database corruption.

EDB Recovery Tool is an advanced utility that repairs corrupted or damaged Exchange database and restores the mailboxes in *.pst files. The EDB Recovery Software supports Exchange Server 5.5, 2000, 2003, and 2007. The software is easy to operate and can also recover deleted mailboxes. The tool is compatible with Windows 7, Vista, XP, 2003, and 2000.