I have RouterOS 7.16 with VPN setup with our RADIUS server. PPTP and SSTP works great (and eduroam Wi-Fi with IEEE 802.1X authentication too).
But OpenVPN does not as there is not an option to set MS-CHAPv2 as Auth-Type in OpenVPn config page to allow it to work the same way as PPTP and SSTP.
I’m able to connect, I see my login-name in RADIUS server log, but it reject me with “No Auth-Type found”.
Could you please add this option to OpenVPN configuration in RouterOS?
Thank you. Milan
I have the same problem, hope there is a solution soon to improve the experience of using OpenVPN!
You should both open a ticket at Mikrotik Support, while sometimes the developers do read forum posts, it is not given that they will do anything without an opened ticket.
I filled a ticket: Log into Atlassian - Support
Thank you for your suggestion. Milan
The ticket above has been closed with no clue if it will be added/fixed in the future 
It looks like now we have the option to select user authentication method (pap or mschap2) but RADIUS authentication still does not work. It looks like authentication flow is not even forwarded to RADIUS (based on RADIUS status info) while other VPN types authenticate with RADIUS without problems…