Many thanks for replying everyone
I can see that I have touched a nerve. Perhaps the first person to create such a "killer" app will be hailed a hero!
@Ath, I did complain on one occasion to the developers - of Tabbles (some nice Italian gentlemen) when Tabbles insisted on opening a browser page every time on installation AND update. They informed me that mine was the first complaint about that and all the other users loved the fact that the Help page opened at the website! So....
@Eóin - I'm not a programmer so I'm afraid I'd probably end up with a bomb that destroyed my machine.
@app103, now that's an idea. I could install any quick and simple browser I would never use (there are lots of them) and block it in ESET's firewall. Combined with BrowserTraySwitch, that would work, except ... remember, some installers actually hang if they don't get a signal back that the browser page has opened (that SHOULD be outlawed).
@MilesAhead "Maybe the pop-up killer approach would be better. Kill all browsers until the install is complete." It would need to send a signal to the installer that the URL was opened. Some installers actually hang if they don't get that response.
Brian De B