Exchange recovery: How to troubleshoot Event ID 9175 and 486

Are you encountering problems while mounting a database on an Exchange Server? Usually, such issues occur when if an anti-virus program deletes the Exchange Server log file. Another prominent reason could be corruption in vital EDB files. In such situation, you should address the problem by adopting several Exchange Server recovery measures to repair the database and bring it to consistent state. If you fail to resolve the issues, you can perform recovery for Exchange Server database files by employing a professional recovery software.

Consider a scenario, wherein, you try to mount a database on a server that is running Microsoft Exchange Server, and instead receive the following error message:

“An internal processing error has occurred. Try restarting the Exchange System Manager or the Microsoft Exchange Information Store service, or both.
ID no: c1041724
Exchange System Manager”

Additionally, the following event is logged in the Application log:

Event Type: Error
Event Source: MSExchangeSA
Event Category: (14)
Event ID: 9175
Description: The MAPI call ‘OpenMsgStore’ failed with the following error: The Microsoft Exchange Server computer is not available. Either there are network problems or the Microsoft Exchange Server computer is down for maintenance. The MAPI provider failed. Microsoft Exchange Server Information Store ID no: 8004011d-0526-00000000

or

Event Type: Error
Event Source: ESE
Event Category: General
Event ID: 486
Description: Information Store (3932) First Storage Group: An attempt to move the file “E:\Program Files\Exchsrvr\mdbdata\E00.log” to “E:\Program Files\Exchsrvr\mdbdata\E000080A.log” failed with system error 2 (0×00000002): “The system cannot find the file specified.” The move file operation will fail with error -1811 (0xfffff8ed).

Cause

The above error message can surface in the following conditions:

1. Error 1811 relates to JET_errFileNotFound. This issue may pop up in an Exchange log (E00.log)  file that has a mismatching signature and LGeneration. If E00.log file has a mismatching signature, the information store won’t mount even if the databases are consistent.
2. If an anti-virus program quarantines, deletes or interferes the current Exchange log file.

Resolution

To perform Exchange recovery,  ensure the anti-virus is not configured to scan the Exchange Server directories. Check the log files of the anti-virus program to verify whether the Exchange log file was quarantined or deleted.

1. If quarantined, recover the Exchange log file by executing the following steps:

a) Recover the Log to folder which contains production files
b) Start MS Exchange Information Store Service. In case other Exchange log files are not missing, the database will mount. In case more log files are found to be missing, check the missing log files in the quarantine folder. If you cannot find the files, follow the next step.

2. If deleted, recover the Exchange log file by following these steps:

a) Move all the inconsistent databases to backup folder
b) In case, new E00.log file is made, move it to the backup folder. Also, move E00.chk and copy the existing files.
c)Rename last E00*.log file as E00.log
d) Restore database from backup.

If you do not have a backup, you must consider using third-party Exchange Server recovery software to bring EDB database files to consistent state.

Stellar Phoenix Mailbox Exchange Recovery extracts inaccessible data from corrupt .edb files and  is compatible with Exchange Server 5.5, 2000, 2003, and 2007. This Exchange recovery tool recovers all e-mail messages, notes, journals, tasks, contacts and other components.

Visit here to download stellar phoenix mailbox exchange recovery software:

http://www.ms-exchange-server-recovery.com/download-exchange-recovery-software.php

How to Repair and Restore Unmountable Exchange Server Database

In Microsoft Exchange Server, when you access data from the Exchange Server Database (EDB) file, it is mounted after running Information Store Service. Mounting is the process of making the database available for all services running under Exchange Server environment. However, under some circumstances, the EDB file refuses to mount and it remains inaccessible. The problem may occur due to numerous reasons, including database corruption. This behavior results in severe data loss and requires Exchange Recovery if there is no backup in place.

While mounting the Exchange Server database on server, which is running MS Exchange Server, you might encounter the below error message:

“An internal processing error has occurred. Try restarting the Exchange System Manager or the Microsoft Exchange Information Store service, or both.
ID no: c1041724
Exchange System Manager”
Along with the above error message, you may also see the below events in Application Event Log of Microsoft Exchange Server:

1. Event Type: Error
Event Source: MSExchangeSA
Event Category: (14)
Event ID: 9175
Description: The MAPI call ‘OpenMsgStore’ failed with the following error: The Microsoft Exchange Server computer is not available. Either there are network problems or the Microsoft Exchange Server computer is down for maintenance. The MAPI provider failed. Microsoft Exchange Server Information Store ID no: 8004011d-0526-00000000

2. Event Type: Error
Event Source: ESE
Event Category: Logging/Recovery
Event ID: 413
Description: Information Store (3932) First Storage Group: Unable to create a new logfile because the database cannot write to the log drive. The drive may be read-only, out of disk space, misconfigured, or corrupted. Error -1811.

Cause
It may occur due to any of the followings:
1. Jet Engine errors.
2. Deletion of Exchange log file by virus.
3. Running eseutil /p command on damaged database
.

Resolution
In all the above situations, you need to use Exchange Recovery Software to repair and restore the damaged database.

Exchange Recovery Tool is specifically designed to carry out in-depth scan of entire Exchange Server database and extract all inaccessible data from it. They ensure absolute, simple, secure, and quick Microsoft Exchange Recovery in all cases of EDB file corruption.

Stellar Phoenix Mailbox Exchange Recovery software repairs and restores damaged Exchange Server database in all cases of corruption. The Exchange Server Recovery software works well with Microsoft Exchange Server 2007, 2003, 2000, and 5.5. It restores all EDB file objects, such as emails, notes, contacts, tasks, calendar entries, journal, and more.