Search Microsoft Security
Search Microsoft.com

Microsoft security updates for April 2011

Microsoft security updates for April 2011

As part of Microsoft's routine, monthly security update cycle, we released 17 new security updates on April 12, 2011.

Get the Details

Watch a video about the April 2011 security updates.

IT Professionals and System Administrators

Go to Microsoft TechNet for detailed information about these updates.

Skip the details and download the updates

Go to Microsoft Update to download the latest updates.

Latest Security Updates

Bulletin

Reason for update

KB article

MS11-018

Addresses a vulnerability in Internet Explorer

2497640

MS11-019

Addresses vulnerabilities in Microsoft Windows

2511455

MS11-020

Addresses a vulnerability in Microsoft Windows

2508429

MS11-021

Addresses vulnerabilities in Microsoft Excel

2489279

MS11-022

Addresses vulnerabilities in Microsoft PowerPoint

2489283

MS11-023

Addresses vulnerabilities in Microsoft Office

2489293

MS11-024

Addresses a vulnerability in Microsoft Windows

2527308

MS11-025

Addresses a vulnerability in Microsoft Foundation Class (MFC) Library

2500212

MS11-026

Addresses a vulnerability in Microsoft Windows

2503658

MS11-027

Addresses vulnerabilities in ActiveX Controls

2508272

MS11-028

Addresses a vulnerability in .NET Framework

2484015

MS11-029

Addresses a vulnerability in GDI+

2489979

MS11-030

Addresses a vulnerability in Microsoft Windows

2509553

MS11-031

Addresses a vulnerability in Microsoft Windows

2514666

MS11-032

Addresses a vulnerability in Microsoft Windows

2507618

MS11-033

Addresses a vulnerability in Microsoft Windows

2485663

MS11-034

Addresses a vulnerability in Microsoft Windows

2506223

Get security updates automatically

You may already have the update if you have automatic updating turned on. To learn about automatic updating, see Update your PC automatically.

If you do not have automatic updating turned on, or to check whether you need the update, go to Microsoft Update. Microsoft Update is an online tool that will scan your computer and provide you a report about what updates your computer needs.

Download updates from the Microsoft Download Center

Security updates can be downloaded from the Microsoft Download Center. Find them by doing a keyword search using the words security update and the name of the month the update was released.

Technical information about security updates

Read the Microsoft Security Response Center blog for updated information. IT professionals and systems administrators, go to Microsoft TechNet for detailed information about updates.

Other steps you can take to help protect your computer