Windows 10 April 2018 Update and Avast
Image Courtesy: Microsoft.com

Windows 10 April 2018 Update (version 1803) isn’t free of all the bugs, and the new version of the operating system has ended up breaking machines or brought some compatibility issues. Avast recently acknowledged a compatibility issue with Windows 10 version 1803 and their antivirus solution that was bricking some computers.

Avast engineer earlier this week confirmed that the Microsoft has started blocking Windows 10 April 2018 Update installation on systems running Avast antivirus software.

Yesterday late night, Vik from Avast team has also revealed that an element of the Windows 10 April 2018 Update is incompatible with the Avast Behavior Shield which is causing the update to fail and brick PCs in some cases.

The company also claims that it’s not an Avast-specific issue and the problem could affect other software as well.

“In cooperation with Microsoft we have identified an element of the latest Windows 10 1803 update that is incompatible with the Avast Behavior Shield, causing the aforementioned update to fail in some instances (related to a timing issue, Internet connectivity issue, etc). Luckily, we have found a way to prevent the problem and are now automatically pushing a VPS update to all customers which makes sure that the problem doesn’t happen,” Vik, Global Moderator, Avast said in a post on their forum.

It is also worth noting that only “small subset of Avast customers” are affected, and the company has also detailed a workaround.

First and foremost, the recovery process requires an 8GB USB drive and a spare computer. On your spare computer, create a bootable USB drive by downloading Media Creation Tool from here. Follow the on-screen instructions and create a bootable drive with Windows 10 64-bit. To recover the broken PC, do the following:

  • If your PC is at the blue screen, choose the keyboard language, and select ‘use another operating system’ option.
  • Choose the second option named “Windows 10 on volume X” and the computer will boot to the desktop (after sign-in screen if any).
  • Right-click any blank area on the taskbar and open Task Manager.
  • In Task Manager, click More details -> File -> Run new task and check the box “Create this task with administrative privileges”.
  • Click “Browse” and navigate to a USB drive.
  • Select “setup.exe” and follow the steps to “upgrade” Windows.
  • Follow the on-screen instructions and your PC will upgrade to Windows 10 version 1803.

“In the meantime, we continue to investigate this issue which appears to affect only a small subset of our customers. BTW at this stage, we know it’s not an Avast-specific issue as the problem affects other software as well,” he added.

  • V.K. is the man, Vik is a typo. And thanks V.K. for getting on this ASAP!

  • Alfred Soyemi

    “The company also claims that it’s not an Avast-specific issue and the problem could affect other software as well.”
    That is a load of crap, AVAST own testing impending Os updates with their AV. not MSFT. So AVAST and other Developers who did not see the compatibility issues coming are all at fault. Most of these 3rd party AV developers always try to own your PC with the installation of their AV, Well, Os Update is going to try to pry that ownership off AV so that it can be an Os.
    Windows Defender and other AV software worked just fine in the update. I Updated 3 2in1, a game rig and 2 desktop PC with no bricking. COuple of them use Symantec, rest use Windows Defender.

    • Exactly. I run Avira and never had any problems.