A denial of service vulnerability exists when .NET Framework improperly handles web requests. An attacker who successfully exploited this vulnerability could cause a denial of service against a .NET Framework web application.

Novērš System.TimeoutException izņēmumu, kas rodas, izpildot .NET Framework 3.0 vai .NET Framework 3.5 WCF pakalpojumu, kas izmanto net. TCP porta koplietošanas pakalpojums (Smsvchost.exe). Šī problēma rodas, kad Smsvchost.exe process pārstāj reaģēt.

Restart requirement. You may need to restart the computer after you apply this update if any affected files are being used. We recommend that you exit all .NET Framework-based applications before you apply this update.

1 Windows Presentation Foundation (WPF). Additional information about this update. The following articles contain additional information about this update as it relates to individual product versions.

This issue occurs because the Smsvchost.exe process times out after one minute when it tries to transfer an incoming connection request to the W3wp.exe worker process. Additionally, this time-out is non-configurable. When the CPU has a heavy workload, or when many concurrent connection requests are incoming, the Smsvchost.exe process cannot ...

Release Channel. Available. Next Step. Windows Update and Microsoft Update. Yes. None. This update will be downloaded and installed automatically from Windows Update.

934307 Description of the Windows Update Stand-alone Installer (Wusa.exe) and of .msu files in Windows Vista, Windows 7, Windows Server 2008 and in Windows Server 2008 R2 Restart information This update does not require a system restart after you apply it unless files that are being updated are locked or being used.

Notice. This update is included in the February 2018 Preview of the Quality Rollups for .NET Framework 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, and 4.7.1 for Windows 7 SP1 and Windows Server 2008 R2 SP1 ().This update was previously included in the Security and Quality rollup on February 13, 2018, in the Preview of Quality rollup on January 18, 2018, and as part of the Security and Quality rollup ...

How to obtain help and support for this security update. Help installing updates: Support for Microsoft Update Security solutions for IT professionals: TechNet Security Troubleshooting and Support Help protect your computer that is running Windows from viruses and malware: Virus Solution and Security Center Local support according to your country: International Support

因此，Smsvchost.exe 程序逾時，最後會停止回應。發生這個問題時，則 Smsvchost.exe 程序無法在 IIS 重新啟動之前路由傳送要求到 W3wp.exe 的工作者處理序。 解決方案. 若要解決這個問題，套用 Microsoft 知識庫 (KB) 文件所述的 hotfix 2504602。