In Microsoft Exchange Server 2019 or Exchange Server 2016, a user composes a new email message by using the BlackBerry Hub app on an android phone. The user separates two or more recipients with a comma and saves the email message as a draft. When this draft is viewed in the Outlook on the web (formerly known as Outlook Web App) or Outlook client, the recipients are displayed as a single recipient and not as two separate recipients. If a semicolon is used instead of a comma, this works fine.


To fix this issue, install one of the following updates:

For Exchange Server 2019, install the Cumulative Update 4 for Exchange Server 2019 or a later cumulative update for Exchange Server 2019.

For Exchange Server 2016, install the Cumulative Update 15 for Exchange Server 2016 or a later cumulative update for Exchange Server 2016.

Third-party information disclaimer

The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.


Learn about the  terminology that Microsoft uses to describe software updates.

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