microsoft security essentials

How to Repair Windows Defender Error 0x800106ba in Windows PC

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Windows Defender is free anti-virus software from Microsoft. It is known for its reliability, efficiency and stability, but sometimes Windows Defender or Microsoft Security Essentials stops working and displays this error code Microsoft Defender 0x800106ba with a brief description – The Windows Defender application failed to initialize.

What causes Windows Defender error 0x800106ba?

  • System infected with malware
  • Outdated Windows Defender firewall
  • Damaged, corrupted, or missing Windows Defender update files
  • Incorrect registration of important Windows Defender files in the system.
  • Conflict with third-party antivirus programs.

How to fix Windows Defender error 0x800106ba?

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How to Troubleshoot “Virus Definitions Update Failed” problem in Avast Antivirus

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Avast is popular antivirus software available for Windows, macOS, iOS, and Android. It is available in free and paid versions, both of which can effectively protect your data from unauthorized access. It can detect and remove all malware and other threats, making it one of the most recommended third-party antivirus solutions.

When using Avast to protect your computer from viruses, you should regularly check for new virus definitions. This is a database of virus types that antivirus software uses to detect threats to your system. Sometimes an error occurs when you try to download this database. read more