Are you running any kind of antivirus on Mac OS X or Windows? What does activity monitor show when this happens? High cpu or memory usage?
Something else i have seen is an issue with permissions being granted to outlook to access the exchange server if you are using microsoft exchange email server. You can usually resolve this by going to your Vm configuration < Network < Set source to wifi or default adapter < click advanced < Generate a new mac address and select use generated mac address. I have seen a lot of issues when the windows VM also tries to use the host mac address with a bridged connection. It actually will freeze my outlook 2010 up when i do this testing.
Last edited: Aug 27, 2016