In the latest blog post from the Intune Customer Success Blog, Jack Poehlman talks about:
“We’ve heard from a few customers recently about this experience setting up Wi-Fi profiles. The cases were very similar; the customer was attempting to setup certificate-based Wi-Fi profiles on Android Enterprise work profile devices and reported that the Wi-Fi profile is constantly reporting “Error”. Looking into these reports, we found that the customer was deploying a device-based certificate instead of a user-based certificate. Furthermore, the device-based certificate was configured with only a subject name such as CN= however no “Subject alternative name” was defined…”