System Requirements

  • Supported Operating Systems: Windows Server 2003, 2008; Windows Vista; Windows XP; Windows 7; Windows 8, Windows 8.1 (note: the desktop integration features currently are not working in Windows 8 and 8.1)
  • IE8, 9, 10 or 11
  • Works in both x86 & x64
  • Microsoft .NET Framework 4.0
  • Microsoft Visual C++ 2010 SP1 Redistributable Package (x86) or (x64)
  • OWA S/MIME control installed (in order to use desktop integration features) for Exchange 2007 & 2010
If the Send To feature from Office applications is not enabled as Outlook is not installed please see this Microsoft KB article for a workaround.


Some of the Desktop Integration features are currently not supported under Windows 8 and Exchange 2013.


Simply unzip to a folder and double-click OWAtray.exe to install as per normal.


Uninstall from the shortcut in the Start Menu or from Add/Remove Programs in Control Panel.