In the MS Exchange Server systems, the public folders are well structured databases, which enable you to collect, organize, and share the information with your colleagues in your organization. These public folders are mounted when you start Exchange server and can be replicated between different versions of Exchange servers. However, when you are unable to mount the public store then very often corruption in the EDB file is the major reason behind this. You should try to find out the reason for EDB corruption and try to repair EDB file. If none of the methods work, then the only way-out is to use a third-party EDB repair software [http://www.edb-repair.com/] to do the needful.

Assume a practical scenario in which you are using MS Exchange 2000 Server Edition. You are unable to mount the Exchange public folder store as the following error message is displayed:

<em>"An internal processing error has occurred. Try restarting the Exchange System Manager or the Microsoft Exchange Information Store service, or both.</em>

<em>ID no: c1041724</em>

<em>Exchange System Manager"</em>

When you check the Application event log, you find the following event ID:

<em>"Source: MSExchangeIS Public</em>

<em>Event ID: 1133</em>

<em>Type: Information</em>

<em>Computer: Exchange</em>

<em>Allocating message database resources for database "First Storage Group\Public Information Store (Exchange)". For more information, click http://search.support.microsoft.com/search/?adv=1. "</em>

Cause:

There could be different causes for this generic error. Some of them are:

• The first Exchange Server was deleted, which caused this problem. Because of this, the respective public folder store is transferred to the 'LostAndFound' container.


• It may also be possible that the old public store and/or the whole server is moved to the 'LostAndFoundConfig' container.

Resolution:

The problem can be solved using the following methods:

• You should use the 'Active Directory Users and Computers' feature to delete the ExchangeOld folder store from the 'LostAndFound' container.


• You should use the 'ADSI Edit' feature to remove the ExchangeOld folder store from the 'LostAndFound' container.

Note: When you perform either of the aforementioned methods, ensure that the Default Public Store is referring to the existing public folder store.

However, if the problem is persisting even after performing these methods then it means the EDB file is damaged, which can be repaired using a third-party EDB repair software. Such read-only EDB recoverytools are extremely safe to use that do not overwrite the existing EDB database file during the recovery.

One of the most efficient EDB repair [http://hubpages.com/hub/EDB-Repair-tools] tools is Stellar Phoenix Exchange Server Recovery, which repairs EDB database file meant for MS Exchange Server 5.5, 2000, 2003, and 2007. With the capability of extracting individual PST files for every user mailbox from EBD file, this EDB repair software is compatible with Windows 7, Vista, Server 2003, XP, and 2000.