Why am i getting this error while installing the new Avast Free Antivirus?

[REDACTED]

I have been using the free Avast antivirus since long. and it works great. I have had no problems whatsoever with it till now.

Recently, the registration expired. So, when i tried to register again, as i always do, it was not successful.

Also, then i came to know that there is now a newer version of the anti virus that won't require registration at all.

However, when i tried to install it on my old desktop PC the following error shows.

Is it because of the SP2/SP3 thing?

Are there some methods by which i can still use it on my current set up or do i need to change my set up?

[Asyn]

Is it because of the SP2/SP3 thing?

If you run XP, yes.
-> https://www.avast.com/faq.php?article=AVKB44#idt_100

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Is it because of the SP2/SP3 thing?

If you run XP, yes.
-> https://www.avast.com/faq.php?article=AVKB44#idt_100

Ok. Thanks.

[Asyn]

You're welcome.

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Now, all of sudden, i noticed that since yesterday Avast again started working. The registration info shown is attached. 

Now, how can this be possible? As i have definitely not registered on that day. Also, once registered does it not remain registered for one year? 

[Asyn]

Registration is history, see: https://www.avast.com/registration-free-antivirus
Strange that you only got 90 days, though...

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So, then how did that happen? It must be some virus that did it? 

Also, i did not at all register at the time and date shown. This i remember distinctly. And as you have said, registration is not possible at all right now.

[Asyn]

No virus, older versions do auto-register.

[REDACTED]

No virus, older versions do auto-register.

Ok. Thank you for that information. I was not aware that it can auto-register.

[Asyn]

You're welcome.