Giga Vault Storage reports an error "MAPI_E_NOT_FOUND" when trying to configure mailbox level backup in 2007 Exchange server (64 bit) machines.

Cause:

Giga Vault Storage uses Microsoft's MAPI client component installed in the Exchange Server to backup the Exchange MailBoxes. For 64-bit environment the MAPI client component is yet to be released by Microsoft. Giga Vault Storage, therefore, cannot support backing up Exchange Mailboxes in 64-bit machines.

Resolution:

However, we have a work around to backup Exchange Mailboxes in 64-bit Exchange Server 2007 using MAPI 32-bit client component and 32-bit Giga Vault Storage client installed in the 64-bit machine.

Click here to download MAPI 32-bit client component.

Please note that this workaround is to backup the Exchange Server 2007 Mailbox in 64-bit environment using 32-bit exe. With this 32-bit exe you should not backup SQL Server database, Exchange Server Information Stores[used under disaster recovery cases], system-state backup of the 2007 Exchange Server. And also you should not configure file backups with VSS option [option to backup open files] - as these backups will not work with the 32-bit Giga Vault Storage exe running in the 64-bit machine.

To apply the workaround follow the steps given below:

1. Install Giga Vault Storage in a Windows[32-bit] machine.
2. Stop Giga Vault Storage in your Exchange Server 2007 64 bit machine.
3. Rename the executable file "gigavaultstorage.exe" to "gigavaultstorage_64bit.exe" in the location "<Giga Vault Storage Home>/bin" in the 2007 Exchange Server.
4. Copy the "Giga Vault Storage.exe" from the 32-bit machine to the 2007 Exchange Server.
5. You can now uninstall Giga Vault Storage in the 32-bit machine.
6. Start Giga Vault Storage in the 2007 Exchange Server.

Now look for the mapisvc.inf file in 64 bit Exchange Server at the location "C:\WINDOWS\system32". The MAPISVC.INF file should have the information of the Microsoft Personal Folder store service. If this file does not have this information, then the Exchange MailBox dump will fail with an error indicating that it is unable to create the PST file. If you have installed Outlook in the Exchange Server machine it may also exist in the common system program files area (e.g. C:\Program Files\Common Files\System\Mapi\1033). If you have multiple versions of this file then you should make sure that they are the same.

Verify the file has an entry for the Microsoft Personal Folder store service. You can determine this by looking for the following information. If this information is not in the file then you need to add it in the proper sections:

Note: Please take copy of your "mapisvc.inf" file before making any changes.

[Services]
MSPST MS=Personal Folders File (.pst)

[MSPST MS]
Providers=MSPST MSP
PR_SERVICE_DLL_NAME=mspst.dll
PR_SERVICE_INSTALL_ID={6485D262-C2AC-11D1-AD3E-10A0C911C9C0}
PR_SERVICE_SUPPORT_FILES=mspst.dll
PR_SERVICE_ENTRY_NAME=PSTServiceEntry
PR_RESOURCE_FLAGS=SERVICE_NO_PRIMARY_IDENTITY

[MSPST MSP]
34140102=4e495441f9bfb80100aa0037d96e0000
PR_PROVIDER_DLL_NAME=mspst.dll
PR_SERVICE_INSTALL_ID={6485D262-C2AC-11D1-AD3E-10A0C911C9C0}
PR_RESOURCE_TYPE=MAPI_STORE_PROVIDER
PR_RESOURCE_FLAGS=STATUS_DEFAULT_STORE
PR_DISPLAY_NAME=Personal Folders
PR_PROVIDER_DISPLAY=Personal Folders File (.pst)

For more information on the format of the MAPISVC.INF file see the following Microsoft article:
http://support.microsoft.com/kb/294470

After modifying the mapisvc.inf file, please check whether the Mailboxes get listed in Step 2 in the Backup -> Create Exchange Mailbox Backup page in the Giga Vault Storage web console.