I am having HTTP: Internal 500 Error when accessing Office365 after upgrading from NAM 4.2.2 to NAM 4.3.2 Appliance for Primary Appliance.

Office365 integration is va WS-TRUST and WSFED federation. I noticed the SSL strong security changes in 4.3 onwards.

I had reverted back the SSL setting as per documentation for Console, IDP and MAG... but no luck

My Secondary Appliance which remains at 4.2.2 have no issues accessing Office365. At this moment, all access in channeled to Secondary Appliance.

Anyone have any clue what could went wrong ?