Hello,
Thank you for reporting the issue.
We need crash dump files from this folder to analyze your problem.
C:\Users\<Name>\AppData\Local\Arma 3\
Can you upload somewhere in winrar package, please?
Archive smaller than 5000 KB can be attached directly to the ticket. For bigger archives, please use some free sharing service and post link here.

How to find correct crashdump file:
Try to make the crash happen
Look into crashdump folder
Upload crashdump with latest date in name (crashdump is rpt + bidmp + mdmp file with same name). Please try to provide as many crashdumps as possible, it helps us investigating the problem in a big way.

Thank you.

http://feedback.arma3.com/how-to-user.html

Crash dump files added.

This time it happened in the middle of the game and now I cant join anymore. I can go to lobby, but after that game crashes.

New crash dump addad.

Could you please try to reproduce the crash without mods? Thanks!

New crash dump without mods added.

Still happens. Yesterday also. New report file uploaded.