| The Internet Archive is currently experiencing extended downtime due to a denial of service attack and security incident. We’ve temporarily switched Wayback Machine links to a mirror generously hosted by Ali, a member of the Windows Update Restored community. You can verify authenticity of files you download by looking for a digital signature from Microsoft Corporation in the file’s Properties dialog, or by confirming that SHA1 hashes match those we list below. You can check file hashes using 7-Zip or HashCheck. Some links may lead to a 404 page at this time. |
Microsoft Download Center Archive
 | Security Update for Microsoft .NET Framework 4 |
A security issue has been identified that could allow an attacker to compromise your Windows-based system that is running the Microsoft .NET Framework and gain complete control over it. You can help protect your computer by installing this update from Microsoft. After you install this item, you may have to restart your computer.
- A security issue has been identified that could allow an attacker to compromise your Windows-based system that is running the Microsoft .NET Framework and gain complete control over it. You can help protect your computer by installing this update from Microsoft. After you install this item, you may have to restart your computer.
| Knowledge Base Articles: | |
|---|---|
| Security Bulletins: |
Files
 | Status: DeletedThis download is no longer available on microsoft.com. The downloads below are archives provided by a community mirror. |
| File | Size |
|---|---|
 NDP40-KB2446708-IA64.exeSHA1: e552fe22e0843c5a2fd3cc16beff9a0c9ee16f23 | 29.30 MB |
| NDP40-KB2446708-x64.exe SHA1: 208e58bd5bc032d49d53177892d511f4bc5623b5 | 23.09 MB |
| NDP40-KB2446708-x86.exe SHA1: 23332c0dfe9401cd52b048916f82d8e95d488371 | 11.07 MB |
System Requirements
Operating Systems: Windows 7, Windows Server 2003, Windows Server 2008, Windows Server 2008 R2, Windows Vista, Windows XP
Note: More information about Service Pack levels currently supported for the platforms listed above can be found in the following page: Microsoft Product Support Lifecycle.
Installation Instructions
- Click the Download button on this page to start the download, or select a different language from the Change language drop-down list and click Change.
- Do one of the following:
- To start the installation immediately, click Run.
- To save the download to your computer for installation at a later time, click Save.
- To cancel the installation, click Cancel.