I changed all of our 1000+ users to use iprint with SSL in our Netware 6.5
ONE of this users was not able to install any printer. He allways got this
HTTP unauthorized error 401. No other problem with this user on this and
other PCs but no printers.
I tried all clients in any version, followed all your hints and TIDs with
all traces and debugs and all i could find for the last three weeks.
The problem finally was the password which this ...user used with a german
umlaut ().
Changed the password, installed his printers, take a holiday.