[CentOS] NetworkManger wireless issues - "Failed to load root certificates"/"unable to get local issuer certificate"

On Fri, 2 Sep 2016, Toralf Lund wrote:

> Hi,
>
> I'm trying to connect my CentOS 6.8 laptop to the wireless net at work, which 
> is secured with WPA2 and AES. I've done this successfully in the past using 
> NetworkManager, but a new safety feature was recently introduced: A CA 
> certificate is required. After this, I've not been able to connect. I have a 
> DER format file, whose path I've entered in

You've definitely provided the correct CA certificate, and not accidentally
provided the certificate itself?

jh