A virus definition update published by the Microsoft is reportedly causing issues when using Microsoft Security Essentials, Windows Defender on Windows 7 machines. As per reports, some users experienced error 0x800106ba when running a manual scan in Microsoft Security Essentials and Windows Defender.
The virus definition update bumped the version of the security solutions to 1.289.1521.0. After installing this update, many users also noted that real-time protection turned off and the security apps displayed warnings stating that malware definitions are out of date.
Microsoft Security Essentials error 0x800106ba fixed
The virus definition update reportedly affected both Microsoft Security Essentials and Windows Defender on Windows 7, 8.0 and 8.1 machines. It is worth noting that no such issues were experienced on any version of Windows 10.
Microsoft has already rolled out a new definition update to address the bug on Windows 7 and Windows Server 2008 devices. In case you are still having issues, you can head to the settings and grab the new patches.
The software giant hasn’t mentioned the virus definition update that users need to install to address the bug. At the moment, the latest definition update version is 1.289.1588.0 and it was released on March 20, 2019. This could be the virus definition update that you can install to resolve Security Essentials and Windows Defender issues on Windows 7 and 8.1.