End of support for Windows XP/Vista

[NON]

I using WinXP/SP3 runnining Avast version 10.4.2233.1299 which is fully free with no payment.  There is a later version which should run on XP but it doesnt work for me.

This must be SSE2 issue. Avast 10.4.2233 is the last version which supports non-SSE2 processor.

As for registration, try online registration from Settings => Register, this worked for me last year.
You have to be online while registration process is going.

[rocksteady]

From looking at https://www.avast.com/registration-free-antivirus

The key you got is stated to be for Avast 7 or older. You have Avast 10.

"If you're using Avast Free Antivirus version 7 or older, please use this universal key:"

It also states you do not need a key for other versions.

"Newer versions of Avast Free Antivirus will no longer ask you to register, and older versions will keep working even after they've "expired"."

[Harlequin]

@NON  @RockSteady

Thank you both for your kind advice.  It seems I am getting references to Avast versions 7 and 10 mixed up with Windows 7 and 10!  I have now restored XP from a backup system which already has my original Avast 10.1 installation that says I am registered.

This question arose because after enabling Avast, I couldn't COPY or MOVE any files although I could create and delete them.  Something has affected Window XP's copy handler. 

A few hours before I noticed this, I had enabledAvast 10.4 shields and downloaded the latest Avast virus fingerprints.  Most of the time I run XP with Avast protection disabled but I decided I would like Avast to be active. 

I only have the Real-time Shield and Web Shield components installed.

Could Avast have caused all Windows copying or moving to be blocked?  I seem to recall some settings which permitted detailed control such as this but I can't understand why this would happen to all file operations and also happen without me changing any settings.

[rocksteady]

...
I only have the Real-time Shield and Web Shield components installed.

Could Avast have caused all Windows copying or moving to be blocked?  I seem to recall some settings which permitted detailed control such as this but I can't understand why this would happen to all file operations and also happen without me changing any settings.

I assume it is now behaving OK. I think few on here will be using, or be familiar with, Avast v10 at its settings. Things have changed a bit since that version.

[NON]

Looks like Windows XP environment cannot renew its registration (avast is working but shows red X icon saying its license has expired).

Original post (Japanese)
https://forum.avast.com/index.php?topic=319999.0

[Asyn]

Looks like Windows XP environment cannot renew its registration (avast is working but shows red X icon saying its license has expired).

Hi, if Avast works (detections/VPS updates), you can ignore it.

[NON]

Looks like Windows XP environment cannot renew its registration (avast is working but shows red X icon saying its license has expired).

Hi, if Avast works (detections/VPS updates), you can ignore it.

I know (and confirmed) that. Some people just want to remove red X from their machine as it's confusing.

After testing here I cannot find a stable way to re-register nor remove red X for expired Avast 18.
Clean reinstall seems to be a only stable option, while Avast cannot get new license it works (i.e. no red X) without license except for short period of time after boot.

[Asyn]

Looks like Windows XP environment cannot renew its registration (avast is working but shows red X icon saying its license has expired).

Hi, if Avast works (detections/VPS updates), you can ignore it.

I know (and confirmed) that. Some people just want to remove red X from their machine as it's confusing.

The red x should vanish on its own after a couple of days, but I agree that it might be confusing for some.

[Harlequin]

Hello. I am on Win XP/SP3 and run version 10 of Avast.

When I updated Avast today its screens looked a bit different. When the update completed it, unusually, required me to reboot the PC. When the PC rebooted and Windows launched there was a popup with the title: "AvastUI - Entry Point Not Found" and message "The procedure entry point defalte could not be located in the dynamoc link library aswCmnIS.dll".

I get ithe same message if I try to run AvastUI.exe manually.  There is no tray icon for Avast.

I also notice there is an Avast Antivirus service running. I have not noticed this before.

Is there a way to prevent that error message and also to get a tray icon? 

If not then is there a way to uninstall Avast, as I can't access any functions which were accessed via the tray icon.

Thank you for any info.



(PS: In the past I have seen prompts to take version 18 but previous attempts to install it have failed.)

[rocksteady]

Avast 18 is latest for WinXP/Vista. But NON mentioned above that Avast 10 was last version for non-SSE2 processor, so I assume that is your situation and why you had problems with installing Avast 18.

I do not know why Avast10 is not working for you now. I don't remember if that version had "repair" function or not.

If you wish to uninstall avast, Bob's post here has link to avastclear.exe for WinXP.
Bob also has same uninstaller shared on his Google drive included in that post.
https://forum.avast.com/index.php?topic=220639.msg1533473#msg1533473

[Harlequin]

Avast 18 is latest for WinXP/Vista. But NON mentioned above that Avast 10 was last version for non-SSE2 processor, so I assume that is your situation and why you had problems with installing Avast 18.

I think what must have happened is that I didn't have an SSE2 processor and so installed version 10. Later I moved my WinXp hard drive to a PC which does have SSE2 but didn't upgrade Avast to version 18. It's too late now because version 10's tray icon is missing.

If you wish to uninstall avast, Bob's post here has link to avastclear.exe for WinXP.
Bob also has same uninstaller shared on his Google drive included in that post.
https://forum.avast.com/index.php?topic=220639.msg1533473#msg1533473

I notice Bob's AvastClear.exe file is 9.63 MB (10,105,016 bytes).
https://install.avcdn.net/iavs9x-xp/avastclear.exe

On the other hand, the general AvastClear.exe is 12.1 MB (12,716,432 bytes).
https://support.avast.com/en-ww/article/Uninstall-Antivirus-Utility#pc

Is it better to use one rather than the other?

[bob3160]

You'll notice the Avastclear referenced is for those using Avast for XP/Vista
So it depends on which version of Avast you're using and which
version of the un-installer you should be using.

[Harlequin]

Thank you RockSteady and Bob. My Avast v10 uninstalled cleanly. Your help is much appreciated.

[bob3160]

Thank you RockSteady and Bob. My Avast v10 uninstalled cleanly. Your help is much appreciated.

Happy to help.

[bossrox1]

I'm still on xp & found an older avast version to put on my pc. I see there's no longer support for the older version except as I understand it, there'll still be virus definitions updates? The version I got asked for registration but when I hit the button, it didn't go any further so without registering it, it says the program will self destruct in 30 days?