After trying many methods I got the best solution to Reconnect Disconnected Mailbox Exchange 2010 file by using the amazing tool SysInspire EDB to PST converter tool. This tool is specially designed to repair and convert EDB files into PST Format without losing internal data. A smart preview feature is available by which you can easily check and confirm the conversion format. If you want to try this software you can download the demo version of this software also in which you can convert 25 emails from each mailbox.
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