@marco continuing the discussion from SO.
There was a known problem with Couchbase on Sierra. (It had to do with changes in Go support.) I’m assuming that’s what you ran into. The 4.6 developer preview fixes that. You can read more about it (and logs) in this thread: macOS Sierra support?
I believe this same problem affected Windows 10 Anniversary Edition, so if you were using that on Azure, 4.6 should also help there.
To download 4.6-DP: NoSQL Database Download | Couchbase 30-Day Free Trial
To collect logs through the web console: http://developer.couchbase.com/documentation/server/current/clustersetup/ui-logs.html