Is this message merely informative, or does it indicate a problem? I'm attempting to debug my issue with something else and this is the only line I see that sounds like a warning/error prior to the rejection happening. From what I see in rlm_mschap.c, I would have seen a different message if the code could not either find a valid NT-Password attribute[1] or could not create one from a Cleartext-Password attribute[2]. Based on the comment left above the message
The old "mschapv2" function has been moved to here
It leads me to believe this line is informative only. (i.e., we need this attribute to be present, and unless you've seen otherwise it is). -Matt [1] https://github.com/FreeRADIUS/freeradius-server/blob/ec8c055b4c8e9358a08d511... [2] https://github.com/FreeRADIUS/freeradius-server/blob/ec8c055b4c8e9358a08d511...