Multiplayer nonfunctional

The poor rating there due to a non-functioning multiplayer part, and the abysmal UNDERGROUND Support.
Once I (or start multiplayer from the Launcher) from the single-player in the exchange Multiplayer hangs on my entire PC.

Have already tried everything, drivers completely redone (even the Nvidia beta drivers tested), Uplay uninstalled and game / Uplay reinstalled.
Last night I even reinstalled my entire system. The multiplayer just does not work. And none of UBI helps.

Apparently I'm not the only one with the problem:
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I have contacted the support, and the support form you can attach only 1 file.
But there are a number of files requested by the support, including screenshots of the firewall settings, event log, etc. dxdiag
So I have everything packed into a ZIP archive, and appended the file in the form ... read you times by the response of support:

> Thank you for your inquiry.
> Please send us the files again as .zip archive because we have no way .zip files to open.

So answers there at UBI ...

Hab really started UBI again more trusting, but after this slide I'll do without it again in the future.