Failed to get device info: Error occured when get device info. Errorcode: CouldNotCallFunction (0x9) Lowlevel error: NOT_AVAILABLE_BECAUSE_PROTECTION (ffffffa6)

I'm a newbie to nRF5... I just installed latest IAR, nRFgo, Segger J-link & nRF Connect on Windows-10.  Segger J-link appears to have updated nRF51 Dongle to 6.3.  I get the above error message after launching nRF Connect v2.3.0 and selecting the dongle's COM port.  Any help would be appreciated.