Microsoft has just released security updates for January 2015 for all supported operating systems (Windows Vista to Windows 8.1) and other company products.
The updates are already available on Windows Update and you may want to run a manual check for updates to install them right away.
Below you find information about the January 2015 security bulletins that Microsoft released. It starts with the executive summary which highlights the most important update information.
You also find listed how individual operating system editions are affected by the update, how other Microsoft products are affected, and how to install the updates.
Last but not least, all security and non-security updates are listed as well with links and additional information such as severity or impact.
Operating System Distribution
All desktop operating systems but Windows RT and RT 8.1 are affected by one bulletin in a critical way.
All server operating systems are also affected by one bulletin in a critical way.
Other security related updates
Non-security related updates
How to download and install the January 2015 security updates
All security updates are made available automatically via Microsoft's Windows Update service as well as business and enterprise related update services the company operates.
Most home users should get the patches automatically though. If you have disabled automatic updates you can check for updates manually at any time using Windows Update:
You can install some or all of the security patches displayed to you by the program.
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