Information for Bitdefender users on the Microsoft January 2018 Security Update

Microsoft has released a security update on January 3 that mitigates security issue in several modern CPUs. This update comes with new requirements that might break compatibility with specialized applications such as security products.

As per Microsoft’s requirements, security vendors are required to validate compatibility with the new update before accepting it for installation. Here at Bitdefender we take security seriously and we are now in the process of running extensive compatibility tests with all supported operating systems.

As soon as we validate the January 3 security fix against all our supported  products, we will deliver an automatic update that enables the installation of the fix.

For more information about the January 3 security update, please check this knowledge base entry on Microsoft’s website. This document will be updated with new information as we validate the updates against our consumer and business products.

Updated kits and plans for release


Bitdefender Antivirus Free 1/4/2018
Bitdefender Antivirus Plus 2018 1/5/2018
Bitdefender Internet Security 2018 1/5/2018
Bitdefender Total Security 2018 1/5/2018
Bitdefender Antivirus Plus 2016 1/8/2018
Bitdefender Internet Security 2016 1/8/2018
Bitdefender Total Security 2016 1/8/2018
Bitdefender Antivirus Plus Windows 10 1/9/2018
Bitdefender Internet Security Windows 10 1/9/2018
Bitdefender Total Security Windows 10 1/9/2018
Bitdefender Antivirus Plus 2015 1/9/2018
Bitdefender Internet Security 2015 1/9/2018
Bitdefender Total Security 2015 1/9/2018


Note: The Bitdefender 2017 product line is currently compatible with the January 3 Windows Updates. Users running Bitdefender Antivirus 2017, Bitdefender Internet Security 2017 or Bitdefender Total Security 2017 have been automatically migrated to the corresponding Bitdefender 2018 product which automatically unlocks the January 3 Windows Updates.

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