Intune for Windows 10 issue

I have added a work account to multiple Windows 10 v1803 machines running Office 365 Pro Plus, and everything worked. Currently, we require BitLocker encryption and a password for the local account before the device is compliant.

I had my first machine today that would not cooperate. After adding the company portal, it worked. I haven't isolated the exact problem yet, but there were two main differences with the machine:

1. It is running the Office 2016 MSI installation of Pro Plus

2. The user had previously created a PIN for use with fingerprint, and was not requested to create a PIN and change the local account password at the time of adding the work account. I have seen the requirement to set a PIN and change the local account password on all of the other Windows 10 machines where a work account was added and the company portal was not installed.

If I can isolate the culprit, I'll reply back unless someone else responds indicating what may be the cause.

We're a little different from other orgs in that SCCM is still our MDM authority, but removing all of the user policy in SCCM seems to kick the user over to Intune standalone. The user requiring the Windows 10 company portal was already in Intune standalone with a compliant android device. It was kind of strange because the Windows 10 machine requiring the company portal was not appearing in Intune, SCCM, or on the Exchange device list. However, the Windows 10 machine did appear under the user's device list in Azure with no MDM, the way it does when SCCM is managing the device. The Windows 10 device listing in Azure had a compliance status of "N/A", which I haven't seen before.