This page offers an overview of Microsoft's May 2015 patch day. The guide provides you with information about each security bulletin that was released today as part of the the update day.
It lists all security bulletins released by the company today and all non-security updates released by Microsoft since the last Patch Tuesday which happened on April 14, 2015.
It starts with an executive summary highlighting the most important information about this month's update.
This is followed by a detailed operating system distribution which covers both client and server operating systems, other affected Microsoft products, all bulletins, security advisories and non-security updates released by Microsoft, and finally information on how to obtain the updates.
Operating System Distribution
On the client side, Windows 7 is the least affected operating system this month with 2 critical and 1 important bulletin while all other supported client operating systems are affected by 2 critical and 2 important bulletins. The bulletins that does not affect Windows 7 but the other operating systems is MS15-053 (Windows Vista) and MS15-052 (Windows 8 and newer).
The server side shares that. Windows Server 2008 R2 is the least affected this month and not affected by MS15-053 (pre-Server 2008 R2) or Ms15-52 (post-Server 2008 R2).
Windows Technical Preview and Windows Server Technical Preview are affected by MS15-053 and MS15-054.
Other Microsoft Products
Security Advisories and updates
Non-security related updates
How to download and install the May 2015 security updates
Updates are already available via Windows Update. Since update checks are not run in real-time, you may want to run a manual check for updates to find and install the updates as soon as possible on your system.
To do that, tap on the Windows-key, type Windows Update, hit the enter-key and click on check for updates in the window that opens.
Cautious users may want to wait with the installation as updates may have unforeseen consequences on systems as the past has shown.
You may also find third-party tools like WSUS helpful in this regard.
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