That is certainly not the answer I was given by Dell. This was a few years ago but I found it odd that the 64 bit IE was buried in the programs and that the default browser was 32 bit. Almost no extensions to IE worked in 64 bit. Since Dell is a significant contributor to PTC's approved platforms, one would think this would be included. My computer is a PTC certified Precision laptop.
I hope you get it worked out with Brian and for future support cases. I know that I never got to enjoy the Learning Connector as I should have been able to as a benefit of re-upping my maintenance. You will find numberous entries in my support history having this very same problem. Never was the 64 bit option mentioned. The service simply remained sporatic.