after upgrade to 6.23 on x86 my userman
https://myrouter.com/userman cant acces
http://myrouter.com/userman work normaly
?
Do you have certificate installed?
Is https://yourrouterip works?
Yes I have certificate …
/certificate> print
Flags: K - private-key, D - dsa, L - crl, C - smart-card-key, A - authority,
I - issued, R - revoked, E - expired, T - trusted
# NAME COM.. SUBJECT-ALT-NAME FIN..
0 K T cert_1 cen.. email:admin@mydomain.com 90e..
with https://yourrouterip also dont work
only with http://yourrouterip work
this I was notice after upgrade
i guess you need to activate the HTTPS in the /Services Ports
give it a shot and let us know 
No …
see on images:
I have the same problem, I used Ubuntu OpenSSL because the creation via ROS didn’t work for me (gave me error in the line sign template=ca-template ca-crl-host=x.x.x.x name=myCa from this manual http://wiki.mikrotik.com/wiki/Manual:Create_Certificates )
I imported everything but I also get flags KT, not KR as shown in the manual and the https page isn’t working for me either.
Can not working certificate prevent sandbox paypal from working? Do sandbox require SSL?
Solved !
When enable and disable service it was start to work … but
there is again error “mikrotik userman your session has been reset due to inactivity” when accesed with Mozila firefox … with Internet explorer work normaly 
discrabed here http://forum.mikrotik.com/t/user-manager-error-your-session-has-been-reset-due-to-inact/57070/1