Author Topic: Avastsvc uses 25% CPU all the time  (Read 1947 times)

0 Members and 1 Guest are viewing this topic.

Offline edialechu

  • Jr. Member
  • **
  • Posts: 40
Avastsvc uses 25% CPU all the time
« on: August 27, 2021, 03:44:34 PM »
Hi
I need your help. Since the beginning of the week when I booted my computer mainly for the first time, after some minutes when the avastsvc began to work, I could visualize on the task manager that the avastsvc was consuming 25% cpu constantly. I didn´t make changes on my computer.Only 2 things happened different from always:

 a) A new firefox update
 b) the free license was going to expire, now I renewed it but the problem continues. Could be possible that you would made changes on the behavior of the shields or real time monitoring? I will be very grateful if you help me.

Many thanks!

Offline Asyn

  • Avast Überevangelist
  • Certainly Bot
  • *****
  • Posts: 73478
    • >>>  Avast Forum - Deutschsprachiger Bereich  <<<
Re: Avastsvc uses 25% CPU all the time
« Reply #1 on: August 27, 2021, 04:00:04 PM »
- Which Avast..? (Free/Premium)
- Which version/build of Avast..?
- OS..? (32/64 Bit..? - which SP/Build..?)
- Other security related software installed..?
Win 8.1 [x64] - Avast PremSec 22.1.6864.IBC [UI.688] - EEK - Firefox ESR 91.5 [NS/uBO/PB] - TB 91.5.0
Avast-Tools: Secure Browser 97.1 - Cleanup 21.4 - SecureLine 5.15 - Driver Updater 21.4 - CCleaner 5.88
Avast Wissenswertes (Downloads, Anleitungen & Infos): https://forum.avast.com/index.php?topic=60523.0

Offline eLIANT

  • Newbie
  • *
  • Posts: 3

Offline edialechu

  • Jr. Member
  • **
  • Posts: 40
Re: Avastsvc uses 25% CPU all the time
« Reply #3 on: August 28, 2021, 02:36:23 PM »
avast free windows 7 64 bit 17.9.2322 avast version
I dont have other security software installed.
What I notice now is that the problem appears only on the first boot and when I open any program browser, explorer,etc. At this moment the avastsvc begins to work and stuck on 25%.
if I restart the computer the problem dissapears but this is not a solution.
« Last Edit: August 28, 2021, 02:44:49 PM by edialechu »

Offline Asyn

  • Avast Überevangelist
  • Certainly Bot
  • *****
  • Posts: 73478
    • >>>  Avast Forum - Deutschsprachiger Bereich  <<<
Re: Avastsvc uses 25% CPU all the time
« Reply #4 on: August 28, 2021, 02:48:18 PM »
First, be sure to get rid of all remnants of any prior installed AV(s)..!!
-> https://support.avast.com/article/11/

Then:
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.
Win 8.1 [x64] - Avast PremSec 22.1.6864.IBC [UI.688] - EEK - Firefox ESR 91.5 [NS/uBO/PB] - TB 91.5.0
Avast-Tools: Secure Browser 97.1 - Cleanup 21.4 - SecureLine 5.15 - Driver Updater 21.4 - CCleaner 5.88
Avast Wissenswertes (Downloads, Anleitungen & Infos): https://forum.avast.com/index.php?topic=60523.0

Offline avast_user321654

  • Newbie
  • *
  • Posts: 14
Re: Avastsvc uses 25% CPU all the time
« Reply #5 on: August 28, 2021, 02:53:00 PM »
You have the exact same problem as me and Blues Brothers on https://forum.avast.com/index.php?topic=299096

You're CPU is quadcore, right? Mine is duo.
The problem seems to be "avastsvc uses one whole core for itself".
Try a full system scan and check if :
- scan hangs on svchost
- CPU usage goes higher up at that time

Offline edialechu

  • Jr. Member
  • **
  • Posts: 40
Re: Avastsvc uses 25% CPU all the time
« Reply #6 on: August 28, 2021, 05:18:32 PM »
I tried a full scan and the avastsvc hangs with 25% of cpu.The svchost is ok.You could resolve the problem?

Offline avast_user321654

  • Newbie
  • *
  • Posts: 14
Re: Avastsvc uses 25% CPU all the time
« Reply #7 on: August 28, 2021, 05:45:17 PM »
No solution found at the time except installing avast 21 (last version)
I'm waiting for my saviour in the other thread i linked in my previous message.

Offline edialechu

  • Jr. Member
  • **
  • Posts: 40
Re: Avastsvc uses 25% CPU all the time
« Reply #8 on: August 28, 2021, 05:58:54 PM »
Thank you for all your help!! Could be possible that there could be a permission problem when avast trie to scan system files on background? because one week ago it was going well.
« Last Edit: August 28, 2021, 06:02:16 PM by edialechu »

Offline avast_user321654

  • Newbie
  • *
  • Posts: 14
Re: Avastsvc uses 25% CPU all the time
« Reply #9 on: August 28, 2021, 07:14:01 PM »
What I'm noticing is that we are at least tree users having the same problem on windows 7 or old avast versions at the same time!

Offline edialechu

  • Jr. Member
  • **
  • Posts: 40
Re: Avastsvc uses 25% CPU all the time
« Reply #10 on: August 28, 2021, 07:50:13 PM »
I hope that avast could resolve the problem.I always had problems when i had the configuration setting to update automatically  For that reason I turn off the automatic updates. I forgot to tell you that you are right  My computer is an all in one hp touchsmart 610 intel core i5
« Last Edit: August 29, 2021, 12:21:32 AM by edialechu »

Offline avast_user321654

  • Newbie
  • *
  • Posts: 14
Re: Avastsvc uses 25% CPU all the time
« Reply #11 on: August 29, 2021, 02:25:00 PM »
I took the liberty to create a new thread about your/my/Blues Brother's problem :
https://forum.avast.com/index.php?topic=300638.msg1651086#msg1651086

You will find a temporary solution to our problem, and a more definitive one.

Offline edialechu

  • Jr. Member
  • **
  • Posts: 40
Re: Avastsvc uses 25% CPU all the time
« Reply #12 on: August 29, 2021, 07:58:31 PM »
Many thanks for creating the new thread.Can't install the new version because I have windows 7 Sp1.Please solve the problem with the old versions.
« Last Edit: August 29, 2021, 09:37:41 PM by edialechu »

Offline DavidR

  • Avast Überevangelist
  • Certainly Bot
  • *****
  • Posts: 86126
  • No support PMs thanks
Re: Avastsvc uses 25% CPU all the time
« Reply #13 on: August 29, 2021, 08:31:35 PM »
Can't install the new version because I have windows 7 Sp1.Please solve the problem with the old versions.

So why can't you install a later version ?

I can't see how things would change if you are still using an old version of Avast, which essentially hasn't changed as Avast doesn't modify old (unsupported) versions.  So what else on your system has changed recently  ?

The version you have is very old and I can't see Avast devoting the time trying to find where the problem might in an unsupported version of avast.

Even with win 7 SP1 you should be able to install Avast 18.8 (some had to go back to avast 18.5), the last version to support winXP and Vista and you have Win 7, so theoretically you should be able to go beyond that.

Are you not able to install Win 7 SP2 - https://www.google.co.uk/search?q=windows+7+sp2  ?
Windows 10 Home 64bit/ Acer Aspire F15/ Intel Core i5 7200U 2.5GHz, 8GB DDR4 memory, 256GB SSD, 1TB HDD/ avast! free 21.11.2500 (build 21.11.6809.528) UI 1.0.683/ Firefox, uBlock Origin, uMatrix/ MailWasher Pro/ Avast! Mobile Security

Offline edialechu

  • Jr. Member
  • **
  • Posts: 40
Re: Avastsvc uses 25% CPU all the time
« Reply #14 on: August 29, 2021, 08:47:51 PM »
Many thanks for your help but if avast wants that all users update to the last version how I know that this version that you mention will not have the same problem.
I turn on another computer with windows 7 and an old version of avast and it happens the same problem.Last monday it was going well.It is obviously that avast change something.
« Last Edit: August 29, 2021, 09:13:19 PM by edialechu »