Can't update or uninstall Avast Free

I have Avast Free version 2015.10.2.2218 installed, did install the next version but had problems with it so left it at that.

I just tried to update this, but got to “Saving package this may take a while” … then nothing happened, tried twice.

Went to Add / Remove Programs >> “There was an error during product uninstallation”, same on re-try.

I’ve downloaded Avast Uninstall Utility - should I go ahead with this, will it remove all traces?

Recently when I try to install programs I often receive this notice, even with Flash Player, which hasn’t happened before:

“This file came from another computer and might be blocked to help protect this computer”

Have to go to ‘Properties’ and unblock each download now.

Don’t know how to alter this setting or how it got put in place.

I am afraid that if I uninstall Avast Free I might not be able to reinstall it and I’ll be left with no antivirus.

XP SP3 OS. Using Windows Firewall and have CryptoPrevent installed, no other security.

Please advise.

If your CPU supports SSE2…

  1. Download Avast Free Antivirus: https://files.avast.com/iavs9x/avast_free_antivirus_setup_offline.exe
  2. Follow instructions: https://www.avast.com/uninstall-utility (Run this tool for all prior installed Avast versions…!!)
  3. Reinstall Avast with the downloaded installer from point 1.
  4. Reboot.

Thank you very much for helping Asyn.

Re: If your CPU supports SSE2…

I don’t know…

It’s an older computer - please see recent Speccy scan result (attached).

According to Speccy SSE2 is supported on your system.
So, please follow the instructions in Reply #1.

Ok, thank you. :slight_smile:

You’re welcome. :slight_smile:

I just started the computer in Safe Mode.

Clicked on the Avast Uninstall Utility I had downloaded from your link. >>>

"instup.exe - Entry Point Not Found

The procedure entry point Get Logical Processor Information could not be located in the dynamic link library KERNEL32.dll."

I tried again, same.

I clicked on the Avast Uninstall Utility I had downloaded before coming here for help, same error message.

I noticed that the hard drive activity light was full on while I was doing nothing.

Looked at the running processes in Task Manager and saw explorer.exe using memory of 59,824 k, CPU 10-35.

?

What should I do now please?

OK, let’s dig deeper…

Attach your basic diagnostic logs. (MBAM, FRST and aswMBR)
Instructions: https://forum.avast.com/index.php?topic=53253

Here are the logs…

MBAM and FRST scans were run recently - I can re-run them if you wish.

Some info for you…

I have been unable to access my bank’s new online banking system. sfc (System File Checker) has been unable to copy a number of dll files into the dll cache.

I am receiving help with these issues.

For a while now under ‘Applications’ in Task Manager ‘New folder’ always shows. I sought help with regards this. Nothing malicious was detected, I was told it is an odd instance of explorer.exe.

I have found a previous download of Avast Uninstall Utility from last year that worked then, but because of the errors I am getting, I am worried that full uninstallation might fail or that I won’t be able to install the latest version and I’ll be left with no antivirus.

Your help is much appreciated.

Boot up in safe mode and go to program files and delete the avast folder, reboot and clean up with ccleaner

Not very good advice. :o

it works :wink:

alicia you really need to move on from XP its too insecure on the net these days, maybe even try a linux (ubuntu) installation then you won’t need antivirus :slight_smile:

More bad advice. Even Linux needs protection. :slight_smile:

Don’t believe these four myths about Linux security
https://blogs.sophos.com/2015/03/26/dont-believe-these-four-myths-about-linux-security/

http://www.computerworlduk.com/galleries/security/10-linux-malware-threats-2016-bots-backdoors-trojans-malicious-apps-3634006/

OK, now you’ve to wait a bit…

FRST.TXT is not complete.
Please run Farbar again and attach a new FRST.TXT log to your post.

Here is the new FRST scan result.

Thank you very much Avast team for helping.

More info:

I recently installed Google Chrome browser…but receive this error message when I try to access secure sites (for example my bank / Yahoo Mail):

“Your Connection is not private
Attackers might be trying to steal your information from www.google.com (for example, passwords, messages, or credit cards).
NET::ERR_CERT_AUTHORITY_INVALID”

Google Chrome browser 49.0.2623.112

I do not have any difficulties accessing secure sites with Firefox or K-Meleon browsers, but had similar problems with Safari. Cannot access my bank’s new online banking system with any browser though…stream of unresponsive scripts and a locked up computer. Never had any difficulties with the previous system.

No problems are found with Avast network scan.

How can I get rid of those leftover Norton ‘Scheduled Tasks’ entries please?

Well I don’t want to speak too soon…but so far with Avast installed I haven’t had any malware problems. I am also missing a number of Microsoft Windows XP updates due to a previous error on my system, which was found and rectified too late (post April 8th 2014).

XP suits my older computer, which may not cope with a newer OS. I can get compatible drivers for it from Dell. If I get a new computer it will be with the latest Windows version (if there are no major issues reported).

This looks like broken installation of SP3 because this entry point was added to Windows XP in SP3. I would suggest to reinstall SP3 if it’s possible. My testing XP system kernel32.dll (located in C:\Windows\System32) 5.1.2600.6532.

drake127…

Thanks so much for your help and advice.

I feel the whole operating system needs repair, but because Microsoft are no longer providing XP updates (although I haven’t got many of them) have been trying to do a workaround.

Feel an XP SP3 repair installation is needed.

My computer developed lots of problems when I installed SP3 in the past and when I tried I couldn’t uninstall it. I know it’s supposed to be essential, but in my experience it messed up the operating system.

The whole operating system I have now was cleanly installed by a PC World technician.

I was previously advised against another clean installation.

I am being helped from a distance by an expert / MVP, but because this is an Avast program problem I need help from Avast.

How about if I try the previous Avast Uninstall Utility that worked last year? Or would that be risky? Don’t want a problem half way through, even if there wasn’t one, don’t know whether I’ll even be able to install the latest program…

Regarding the 3 diagnostic logs you asked for (MBAM, FRST and aswMBR)…

Would one of the Avast team kindly tell me approximately how long it will take for the results…

Plus also answer my question above.

With thanks in advance.