I have broken the rules and filed a bug report before discussing this issue
here (see https://github.com/jitsi/jitsi/issues/159)
When I run Jitsi in Windows 10, Outlook crashes (and cannot be started again
with the open profile) and Excel crashes in certain moments.
I use 64bit Office 2016 click to run on a win 10 machine. When I installed
Jitsi, I made it my default IM for Outlook. I reinstalled without that
option, but the problem persists.