Welcome to this month's Security Bulletins summary. The guide provides you with all information about this month's security updates for client and server Windows operating systems.
This month is special for two reasons. It is the last patch day for Windows XP, which Microsoft will stop supporting with public updates after today.
Microsoft makes available a feature update for Windows 8.1 which improves the operating system's mouse and keyboard usability. We have covered it before, check it out if you are interested in this one.
A total of four bulletins are released this month. Two have received the highest vulnerability rating of critical, while the other two a rating of important, the second highest rating.
Software affected by the updates include Microsoft Windows, Internet Explorer and Microsoft Office.
You find a summary of all important information about the security bulletins released by Microsoft this week.
Operating System Distribution
All client-based Windows operating systems share the same bulletin vulnerability distribution. Each system is affected by one critical and one important bulletin.
Considering that this is the last public patch day for Windows XP, we will remove the operating system from next month on.
The server-based Windows systems share the same vulnerability profile as well. Each system is affected by one important and one moderate bulletin.
Other Microsoft Product Distribution
Two bulletins affect Microsoft Office software. Most products, with the exception of Office 2003 and Office 2007, are affected by one critical bulletin. The two mentioned programs are affected by one important bulletin in addition.
Microsoft releases a deployment priority each month to act as a guide for system and network administrators. The suggestion uses information such as a bulletins severity, exploits that already target it, and product to determine the bulletins that should be deployed with priority.
Non-security related updates
How to download and install the April 2014 security updates
The updates are as usual available via Windows Update. This is usually the way they are deployed on most home systems as Windows Update is configured to automatically download and install security updates.
The updates are available already. You may want to check for updates manually as it may take a while before Windows checks for updates again.
To do so, press the Windows-key and enter "windows updates" and select that option to run a manual update check.
You can download all updates from Microsoft's Download Center as well. The company will release a security ISO containing this month's patches as well which you can download. It takes some time before it gets released though.
If you need more information, check out our Windows Update guide which covers everything there is to know about updating Windows.
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Ghacks is a technology news blog that was founded in 2005 by Martin Brinkmann. It has since then become one of the most popular tech news sites on the Internet with five authors and regular contributions from freelance writers.