Support for Windows Vista Service Pack 1 (SP1) ends on July 12, 2011. To continue receiving security updates for Windows, make sure you're running Windows Vista with Service Pack 2 (SP2). For more information, refer to this Microsoft web page: Support is ending for some versions of Windows.
Windows Vista Service Pack 1, Windows 7, Windows Server 2008 and Windows Server 2008 R2 now include support for Structured Exception Handling Overwrite Protection (SEHOP). This feature is designed to block exploits that use the Structured Exception Handler (SEH) overwrite technique. This protection mechanism is provided at run-time. Therefore, it helps protect applications regardless of whether they have been compiled with the latest improvements, such as the /SAFESEH option. We recommend that Windows users who are running any of the above operating systems enable this feature to improve the security profile of their systems.
Note If you are running Windows 7 or Windows Server 2008 R2, go to the " Let me enable it myself" section because the automatic wizard for Windows 7 and for Windows Server 2008 R2 is not available yet.
Enable it for me
To enable this feature automatically, click the Fix this problem link. Then, click Run in the File Download dialog box, and follow the steps in this wizard.
This wizard only applies to Windows Vista Service Pack 1 and Windows Server 2008.
This wizard may be in English only; however, the automatic fix also works for other language versions of Windows.
If you are not on the computer that has the problem, you can save the automatic fix to a flash drive or to a CD, and then you can run it on the computer that has the problem.
We would appreciate your feedback. To provide feedback or to report any issues with this solution, please leave a comment on the "Fix it for me" blog, or send us an e-mail message.
Let me enable it myself
Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
322756 How to back up and restore the registry in Windows
By default, SEHOP is enabled in Windows Server 2008 R2 and in Windows Server 2008. By default, SEHOP is disabled in Windows 7 and in Windows Vista. To enable SEHOP manually, follow these steps:
Click Start, click Run, type regedit, and then press ENTER.
The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.
Microsoft provides third-party contact information to help you find technical support. This contact information may change without notice. Microsoft does not guarantee the accuracy of this third-party contact information.
fixit fix it update security_patch security_update security bug flaw vulnerability malicious attacker exploit registry unauthenticated buffer overrun overflow specially-formed scope specially-crafted denial of service DoS TSE WinNT Win2000