PhotoDeluxe was discontinued over 10 years ago, and won't work on modern OS versions.
If PhotoDeluxe Home Edition 4.0 does not work with modern OS versions why
is is it still being sold (see Amazon etc etc)? I am running Windows XP and
it worked fine until connected to internet.
All a bit mysterious!
They are still selling old inventory. But if it worked before and not now you might have to reset preferences. Have no idea how done with that software. With PS you have to start program and immediately hold down the ctrl/alt/shift keys. If fast enough you will get a reset window.
System requirements for PhotoDeluxe Home Edition 4.0
Windows NT / 98 / 95
It's being sold "open box" (aka used) by Amazon partners, not Amazon itself.
Notice that all the reviews are over 10 years old?
We can't promise anything since PhotoDeluxe Home Edition 4.0 came out before windows xp, but here is the
instructions for resetting the preferences.
(PhotoDeluxe Home Edition 4.0 might also be installed in C:\Program Files\Adobe\PhotoDeluxe Home Edition 4.0
on a windows xp machine if it's not installed where in below instructions say it is)
(click on the screenshot below for a larger view)
There is also an 4.01 update that you might try:
Even if the above works, you might really think about photoshop elements 11:
(adobe has 30 day trials available)