My suggestion is to stop upgrading your programs on xp unless it is absolutely necessary.

In regards to the browser you have now, it should perform until it becomes incompatible with the technology; as the internet evolves.

The problem you will have at that time is that the browsers that will be able to perform in the future will also be incompatible with xp.

So my secondary suggestion is to buy a newer machine like a laptop that will have newer technology, in case your XP machine becomes inept to connect to the net.

Jupeter said

Hallo. Will Firefox 52.2.1 continue to work with XP after September 2017?

Yes. The Extended Support Release (ESR) of Firefox 52 will continue to advance toward 52.8.0esr in Spring 2018, including critical security updates.

To understand what it means for a Firefox version to reach the end of its support period: your Firefox browser will no longer get security updates. Over time, flaws will be discovered that allow malicious persons to break into your system and do whatever they want. Of course, you've already accepted that situation with Windows XP, since it has known flaws that Microsoft is not fixing. It may also be true of a number of your other applications.

To help compensate, you can use security software and try to avoid bad sites. There are many brands of security software. If you are on a tight budget, you could look at:

• https://www.comodo.com/home/internet-security/antivirus.php (free version)
• https://www.avast.com/windows-xp-antivirus (free version)

In addition to Firefox's built-in malware and phishing site blocker, you can use OpenDNS (free for home use) to block known bad sites.

• How does built-in Phishing and Malware Protection work?
• https://www.opendns.com/home-internet-security/

Ultimately you may be able to extend the life of your computer and improve your security by changing from Windows XP to a modern version of Linux with a Windows-like "shell" for its interface. Those are generally free, but there will be some differences to learn and some of your applications might not have free replacements.

Hallo Databaseben & Jscher2000.

Thanks for info, both. Much appreciated.

Cheers, Jupeter.

you're welcome.