Ericsson F5521GW Driver OK, not connecting Windows 10

[nelson_chow]

Hello,
I have a ThinkPad T420S with Mobile Broadband Card – the Ericsson F5521GW. The machine is on Windows 10.

PROBLEM:
Clicking on Network & Internet ->Cellular -> Connect button within Windows 10 will yield:
• (Spinning dots) Connecting, then it just give you the Connect button again. No error message was thrown.

DIAGNOSTICS:
• Running the command “netsh mbn show interface” showed correctly that F5521gw is the Mobile Broadband Interface
• Cellular reported 77% reception
• APN Setting was populated, and this setting used to work
• F5521GW Firmware has been updated
• Driver updated, windows reported no errors with the driver installed

Any help would be much appreciated
N