Conversion from HTML to RTF removes non-breaking space in Exchange Server 2019 and 2016

Applies to: Exchange Server 2019Exchange Server 2016


When you drag an email message from Microsoft Outlook to the desktop in Microsoft Exchange Server 2019 or Exchange Server 2016, the formatting of the file on the desktop is changed. This issue occurs when you use the Outlook desktop app (Outlook for Windows or Outlook for Mac) in Online mode.


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

For Exchange Server 2019, install the Cumulative Update 6 for Exchange Server 2019 or a later cumulative update for Exchange Server 2019.​

For Exchange Server 2016, install the 
Cumulative Update 17 for Exchange Server 2016 or a later cumulative update for Exchange Server 2016.


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