How to globally enforce UTF-8 encoding for OWA
You would like to globally enforce UTF-8 encoding for your Outlook Web App.
Exchange Online (Office 365)
As of July 2016, it is not possible to globally enforce a specific encoding for OWA in Office 365.
Exchange Server on-premises
To globally enforce specific encoding settings for all OWA users in Exchange Server on-premises, you need to use the Exchange Management Shell. Follow the steps below to enable UTF-8 encoding for OWA:
- Log in using your Domain Admin account to the Exchange Server.
- Go to the Exchange Management Shell. Execute this PowerShell cmdlet:
Set-OwaVirtualDirectory -identity "Owa (Default Web Site)" -OutboundCharset AlwaysUTF8