Ok, to steer this IT pishing match back on course

As of today, I've been able to renew, but none of my browsers, all with the latest Java installed are able to launch the JNLP for EPCNet. I get failure to load with this:

Error while trying to acquire the username from the sessioncontext.

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'85 300TD "Puff The Magic Wagon" - Rolling Resto
'19 Mazda CX-9 Signature - Wife's sled
'21 Morgan 3-Wheeler P101 Edition
'95 E300d - SOLD
'84 300TD "Brown Betty" - Miss this one
'81 240D "China Baby" - Farm grocery getter