Author Topic: After W10 latest update in MAY 2019 Behavior Shield is turned off on startup  (Read 1214 times)

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Offline nalo89

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Problem only happened after the W10 Update so I have to run the shield after fully booting up. If I modify and untick the Browser check the computer boots up with Behavior Shield intact.

Offline schmidthouse

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Was this a one-time event (after win 10 update) or is it happening continuously?
***HP ENVY 15K LT W10 Pro 1903 64Bit/750GB HD/16GB Ram/Avast Premier 19.5.2378 /VS 501/ASB beta/Mbam/Secureline/SANDBOXIE/Prey Project
**HP Compaq 8510p LT W10 Pro 1903 64Bit/1TB HD/8GB Ram/Avast Premier BETA 19.6.2382 /VS 501/ASB beta/Secureline/SANDBOXIE/Prey Project 
     
*Dell Inspiron XPsp4 PRO 32Bit/2.5GB Ram/Avast(since 2000)18.8.2356/OSA/WP/Comodo FW 3.14/Secureline/Comodo IceDragon v.40
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Offline nalo89

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Hello schmidthouse, it is constant.

Offline rocksteady

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Have you tried to Repair Avast via the UI.
Menu>Settings>Troubleshooting>Repair App

Offline nalo89

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Yes, but as it took 2 hours and was still churning away I came out of it. How long should a repair take?

Offline Be Secure

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Yes, but as it took 2 hours and was still churning away I came out of it. How long should a repair take?
Hardly 5 minutes.

If Repair doesn't fix the problem, try the following:
If your Avast settings are not the default settings and you want them restored after the Clean Install, follow this before removing Avast.
https://goo.gl/TXjM7h
Clean Install of Avast:
https://goo.gl/4Ptzkf
PC- Windows10 EDU 64Bit,Avast Free V.19.5.2378,uBlock Origin,NVT_OSA,GoogleChrome(64bit),CCleaner,Unchecky,ZAM Free,Shadow Defender.
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Offline davews

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I am also noticing this issue after last week's Windows 10 v1809 update (KB4494441). On a couple of days after I boot up my computer Avast displays an exclamation mark that the behaviour shield is off - I just restart the shield so no big issue. It didn't do it yesterday but it did again this morning. v19.3.2369, not the very latest.

Offline schmidthouse

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I am also noticing this issue after last week's Windows 10 v1809 update (KB4494441). On a couple of days after I boot up my computer Avast displays an exclamation mark that the behaviour shield is off - I just restart the shield so no big issue. It didn't do it yesterday but it did again this morning. v19.3.2369, not the very latest.

Try 19.4.2374
I'm not seeing this issue in the latest Stable version or latest beta with my installations. :)
***HP ENVY 15K LT W10 Pro 1903 64Bit/750GB HD/16GB Ram/Avast Premier 19.5.2378 /VS 501/ASB beta/Mbam/Secureline/SANDBOXIE/Prey Project
**HP Compaq 8510p LT W10 Pro 1903 64Bit/1TB HD/8GB Ram/Avast Premier BETA 19.6.2382 /VS 501/ASB beta/Secureline/SANDBOXIE/Prey Project 
     
*Dell Inspiron XPsp4 PRO 32Bit/2.5GB Ram/Avast(since 2000)18.8.2356/OSA/WP/Comodo FW 3.14/Secureline/Comodo IceDragon v.40
<LAYERED SECURITY SOFTWARE PROTECTION + MCShield on all

Offline nalo89

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I am using 19.4.2374 in which the  problem is happening.  I was going to follow schmidthouse's advice to resolve the problem when today the laptop booted up without the problem.  Yesterday I went to modify and unticked the Cleanup box as I use Boostspeed to cleanup with so am wondering if this may have resolved the Behavior Shield problem.  Out of the three computers here the W10 cumulative update installed twice, once on 14th and again on 16th on this laptop.  It appears that this is not normal and MS are looking into it. I have not restarted this laptop since booting up this morning so perhaps the problem may appear again on another startup.

Offline schmidthouse

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I am using 19.4.2374 in which the  problem is happening.  I was going to follow schmidthouse's advice to resolve the problem when today the laptop booted up without the problem.  Yesterday I went to modify and unticked the Cleanup box as I use Boostspeed to cleanup with so am wondering if this may have resolved the Behavior Shield problem.  Out of the three computers here the W10 cumulative update installed twice, once on 14th and again on 16th on this laptop.  It appears that this is not normal and MS are looking into it. I have not restarted this laptop since booting up this morning so perhaps the problem may appear again on another startup.

Thanks for the mention, however credit for the advice/instruction given, goes to 'rocksteady' and 'Be Secure'
I hope all resolves.  :)
***HP ENVY 15K LT W10 Pro 1903 64Bit/750GB HD/16GB Ram/Avast Premier 19.5.2378 /VS 501/ASB beta/Mbam/Secureline/SANDBOXIE/Prey Project
**HP Compaq 8510p LT W10 Pro 1903 64Bit/1TB HD/8GB Ram/Avast Premier BETA 19.6.2382 /VS 501/ASB beta/Secureline/SANDBOXIE/Prey Project 
     
*Dell Inspiron XPsp4 PRO 32Bit/2.5GB Ram/Avast(since 2000)18.8.2356/OSA/WP/Comodo FW 3.14/Secureline/Comodo IceDragon v.40
<LAYERED SECURITY SOFTWARE PROTECTION + MCShield on all

Online bob3160

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Actually, the Clean Install instructions are mine which really isn't important
as long as they did their job. :)
Free avast! Security Seminar: https://goo.gl/kh3cqR  -  Important: http://www.organdonor.gov/ -- My Web Site: http://bob3160.strikingly.com/ - Win 10 Pro v1903 64bit, 8 Gig Ram, AvastFree 19.5.2378, How to Successfully Install Avast http://goo.gl/VLXdeRepair & Clean Install https://goo.gl/t7aJGq

Offline schmidthouse

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Actually, the Clean Install instructions are mine which really isn't important
as long as they did their job. :)

Hi Bob, of course, I personally am fully aware of that and have been since you first put the instructions together. ;)

I was just referring to the directions given in this topic that were links to your instruction.
***HP ENVY 15K LT W10 Pro 1903 64Bit/750GB HD/16GB Ram/Avast Premier 19.5.2378 /VS 501/ASB beta/Mbam/Secureline/SANDBOXIE/Prey Project
**HP Compaq 8510p LT W10 Pro 1903 64Bit/1TB HD/8GB Ram/Avast Premier BETA 19.6.2382 /VS 501/ASB beta/Secureline/SANDBOXIE/Prey Project 
     
*Dell Inspiron XPsp4 PRO 32Bit/2.5GB Ram/Avast(since 2000)18.8.2356/OSA/WP/Comodo FW 3.14/Secureline/Comodo IceDragon v.40
<LAYERED SECURITY SOFTWARE PROTECTION + MCShield on all

Offline Be Secure

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I am using 19.4.2374 in which the  problem is happening.  I was going to follow schmidthouse's advice to resolve the problem when today the laptop booted up without the problem.  Yesterday I went to modify and unticked the Cleanup box as I use Boostspeed to cleanup with so am wondering if this may have resolved the Behavior Shield problem.  Out of the three computers here the W10 cumulative update installed twice, once on 14th and again on 16th on this laptop.  It appears that this is not normal and MS are looking into it. I have not restarted this laptop since booting up this morning so perhaps the problem may appear again on another startup.

Thanks for the mention, however credit for the advice/instruction given, goes to 'rocksteady' and 'Be Secure'
I hope all resolves.  :)
instruction credit @Bob  :)
PC- Windows10 EDU 64Bit,Avast Free V.19.5.2378,uBlock Origin,NVT_OSA,GoogleChrome(64bit),CCleaner,Unchecky,ZAM Free,Shadow Defender.
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Offline nalo89

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I did a power down and bootup late yesterday and the Behavior Shield kicked in ok. This morning the problem returned so I will carry out the instructions given to resolve it.

Offline nalo89

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Thanks to Bob and Schimdthouse for the reference. I carried out the procedures as per as and after the first bootup  both the W10 Defender scan component and Avast Behaviour Shield became switched off even though during the boot up both showed as OK. Also Avast popped a message up saying 'This is embarrassing we need to restart your antivirus' and 'Loading...... this shouldn't not take long' It took four more power downs and boot ups to clear.  It also added another two minutes to the the startup time but I can live with that.  I also find that W10 updates increase boot up times.  This laptop is now 3 and a half years old and was updated to W10 from W8.1 so perhaps like its 83 years old owner (me) is a bit creaky. My and my wife's W10 desktops in general are ok although my desktop closed down if I attempted to do a scan with last version and the one before that of Avast Free so had to uninstall it. I have not attempted to install the latest version.