Fix for Error Code KB2949621 Summary
KB2949621 is an update for Windows operating systems that addresses several security vulnerabilities and functional improvements. This cumulative update includes important fixes and enhancements to ensure better system stability, performance, and protection against known threats.
The update specifically targets the Internet Explorer browser, addressing various security issues such as cross-site scripting (XSS) attacks, clickjacking scenarios, and other vulnerabilities which could potentially allow an attacker to take control of an affected system. It also includes non-security updates that improve reliability and functionality across different Windows components including Active Directory, Windows Server Update Services (WSUS), Microsoft Office integration with SharePoint, and more.
This update is essential for organizations maintaining a secure environment and ensuring compliance with best security practices by patching known vulnerabilities on their systems. It’s recommended to apply this update as soon as possible after testing in your specific deployment scenario.
KB2949621 Update Patches Issue Resolved
KB2949621 primarily addresses security vulnerabilities within Internet Explorer that could be exploited to run unauthorized code or elevate user privileges. Specifically, it resolves issues like:
– Clickjacking attacks (CVE-2013-5087)
– Cross-site scripting (XSS) vulnerabilities (CVE-2014-1769 and CVE-2014-1770)
– Improper handling of objects in memory, which could lead to remote code execution
In addition to these security fixes, the update also includes various non-security improvements such as:
– Enhancements for Active Directory Domain Services (AD DS) functionality
– Fixes related to Windows Server Update Services (WSUS), improving its reliability and performance
– Improvements in how Microsoft Office applications integrate with SharePoint services
These updates collectively aim at providing a more secure, stable, and efficient operating environment.
Howto install KB2949621
To install KB2949621, follow these steps:
- Ensure you have administrative rights on the system to apply Windows updates.
- Back up all critical data before proceeding with any major system updates.
- Navigate to Microsoft’s Download Center and download the appropriate version of KB2949621 for your operating system architecture (32-bit or 64-bit).
- Once downloaded, run the installer package. If prompted by User Account Control (UAC), confirm that you want to allow changes to your computer.
- The installation process will begin automatically. Follow on-screen instructions and wait until the update is fully installed.
- If prompted during the installation to restart your system, do so immediately after the installation completes.
- After restarting, verify that KB2949621 has been successfully applied by checking for its presence under “View Installed Updates” in Windows Update settings or through a command prompt using
wusa /kb:2949621. - To ensure system stability and functionality, restart the computer once more after verifying installation.
Similar questions
What does update KB2949621 do to my Windows system?
Will updating to KB2949621 affect the performance of my computer?
How can I check if KB2949621 is already installed on my system?
Can you tell me how to download and install update KB2949621 manually?
What are the system requirements for installing update KB2949621?
Are there any known issues or problems with update KB2949621?
How can I uninstall update KB2949621 if it causes my computer to crash?
Is update KB2949621 necessary for the security of my Windows system?
Can you explain how update KB2949621 improves compatibility with my software applications?
Does installing KB2949621 require a restart, and if so, can it be postponed?