The Switch Client for Windows supports both 32 and 64-bit versions of Windows Vista/7/8/10

Please find the Outlook version compatibility table below: 

Outlook Version Switch Client Version
2003 v4.0
2007 (SP3 required) v4.26
2010 v4.26 and higher
2013 v4.26 and higher
2016 v4.62 and higher



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