Had the free version of Zone Alarm, but inadvertently updated to the pro version, which then ran without issue for a few days.
Without warning, no access to the internet suddenly occurred, and on investigation, it was then we discovered the pro version was installed.
We assumed that the pro version had stopped working as we hadn't paid any upgrade fee - access to the net was possible when we turned off the firewall - so we decided to completely uninstall the app, and re-install a 'fresh' version of the free edition.
Since then, we cannot set the firewall to high and get access, it has to be set at medium, which causes concern as it is not where it should be.
I've googled for this, but not found any immediate answer, so can anyone throw some light on what might be occurring?
It's a Win98 machine that connects using a 'standard' USB ADSL modem.