I've decided to share my recent experience. Today I was playing with my lab and I've decided to upgrade my ePO to the version 5.3.2.
During the installation I was prompted by the compatibility "Failed to load product list"
I've reviewed the actual compatibility checker log cpcwiz.log and I was surprised what I saw that it's unable to authenticate with the admin pass that i'm using.
I've verified that manually by navigating to :
When I typed my credential it was successful.
So my first idea was okay it should be because of the special characters that I'm using in my password.
what I did was to remove '?' from my password.
Then I've re-run the setup and bang Successful
I hope this will help you.