Wifi with WPA enterprise

Pos­ted in case it helps someone else.

One of my web­site cli­ents asked for help with one of their Mac OS X laptops, which had sud­denly stopped con­nect­ing to their wifi net­work. The wifi con­nec­tion seemed to be demand­ing a WPA enter­prise user­name and pass­word, des­pite being set up as WPA2 per­son­al, which only needs a password.

In the end, the cause was a com­bin­a­tion of a new modem/router from the cable com­pany, and an old ver­sion of Mac OS X (10.7.5). I had to go to the app store to down­load El Cap­it­an, since you can­’t update from 10.7.5 to High Sierra dir­ectly, but after installing it the laptop could con­nect to the WPA2 per­son­al wifi net­work on the new modem/router. It’s now been updated to High Sierra, and the com­pany reminded to install the updates they get a little more regularly…