Hi all!
I faced with the following issue. For the OpenVPN and SSTP services certificate authentication doesn't work. I specified "verify client certificate" and "verify server certificate" options for the server and the client RouterOS 5.26. But connection is established even if I use certificates that belongs to different certificate chains, i.e. the server and client certificates signed different CA's. But this is explicit error according to official mikrotik wiki. Any ideas?

Use the latest version.