New-MailboxImportRequest causes unreadable characters when you import an ANSI format .pst file of Russian language

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Exchange Server 2013 Enterprise Edition Exchange Server 2013 Standard Edition More...Less

Symptoms

Consider the following scenario:

You are in a Microsoft Exchange Server 2013 environment.
You import an American National Standards Institute (ANSI) format personal folder (.pst) file of Russian language that has a Cyrillic encoding to a mailbox by running the New-MailboxImportRequest cmdlet.
The .pst file contains non-ASCII characters.
You open the imported file.

In this scenario, the imported folder names and contents are unreadable. The characters that are used for folder names is a garbled mix of special characters.

Resolution

To resolve this issue, install Cumulative Update 7 for Exchange Server 2013.

Workaround

To work around this issue, import the ANSI .pst file by using Microsoft Outlook or convert the ANSI .pst file to a Unicode file before you run the New-MailboxImportRequest cmdlet.