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ISSUE: [MigrateV6Index.migrateMultiHostIndices] Failed to deserialize v6 index (MS Exchange DAG mail level backup set upgraded from version 6 to 7)

Article ID: 5121
Reviewed: 26/01/2016

Product Version:
AhsayOBM: -
OS: Windows

Problem Description

For MS Exchange DAG mail level backup set created by AhsayOBM version 6, after upgrading the client application to version -, when performing a MS Exchange DAG mail level backup, the following error message is received in the Backup Job Logs :

[YYYY/MM/DD hh:mm:ss] [info] Migrating index entry Job="Current" Path="Microsoft Exchange" Type="T" from v6 to v7
[YYYY/MM/DD hh:mm:ss] [erro] Unable to do backup, Error= [MigrateV6Index.migrateMultiHostIndices] Failed to deserialize v6 index
[YYYY/MM/DD hh:mm:ss] [info] Start running post-commands
[YYYY/MM/DD hh:mm:ss] [info] Finished running post-commands
[YYYY/MM/DD hh:mm:ss] [info] Deleting temporary file C:\Users\org-man\.temp\1449821630967\OBS@100
[YYYY/MM/DD hh:mm:ss] [erro] null
[YYYY/MM/DD hh:mm:ss] [erro] Backup completed with error(s)

This issue will not affect MS Exchange DAG mail level backup set created by AhsayOBM version 7.


This is a known issue with AhsayOBM -


To resolve the issue, patch the AhsayOBM application to version or above. The instructions can be found by Clicking Here.


exchange, server, mail, level, maillevel, mail-lv, dag, migrate, index, indexing, upgrade

public/5121_issue/migratev6index.migratemultihostindices_failed_to_deserialize_v6_index_ms_exchange_dag_mail_level_backup_set_upgraded_from_version_6_to_7.txt · Last modified: 2018/06/26 12:03 by mike.gong