In lumia denim upgrade failure I reported a significant problem with the upgrade in that the handset no longer reported back correctly it was honouring the Exchange ActiveSync policy of handset encryption.
Happy to report that having working with Lumia support staff and even had them connecting their handsets to my infrastructure the problem is fixed. It turns out there was a corrupt \”something\” that was cleared by doing what is called a soft reset (but in reality is more of a \”clear cache\” operation on the handset. This is done by pressing the power and volume down buttons simultaneously for about 10 seconds until the handset restarts.
Afterwards, the date/time might need to be sorted, but the ActiveSync connection now worked, and the handset remained encrypted.