Visual studio 2015 Visual Studio 2015更新3-安装过程中出现安装程序被阻止错误

我正在尝试安装Visual Studio 2015 Update 3，但遇到安装被阻止的错误。我的机器上也没有安装任何以前版本的Visual Studio。有什么补救办法

下面是日志文件的最后几行

[1654:26C4][2017-06-28T11:40:44]i000: MUX:  Detect Completed
[1654:26C4][2017-06-28T11:40:44]i000: MUX:  Wait for View to be loaded
[1654:26C4][2017-06-28T11:40:44]i000: MUX:  View loaded
[1654:26C4][2017-06-28T11:40:44]i000: MUX:  Checking for update...
[1654:26C4][2017-06-28T11:40:44]i000: MUX:  Setup update feature is enabled. Evaluating conditions to determine whether to run setup update.
[1654:26C4][2017-06-28T11:40:44]i000: MUX:  Checking http://go.microsoft.com/fwlink/?LinkID=659005 for update.
[1654:26C4][2017-06-28T11:40:46]e000: MUX:  Exception: Info: Could not download update data.
[1654:26C4][2017-06-28T11:40:46]e000: MUX:  WARNING: For security reasons DTD is prohibited in this XML document. To enable DTD processing set the ProhibitDtd property on XmlReaderSettings to false and pass the settings into XmlReader.Create method.
[1654:26C4][2017-06-28T11:40:46]e000: MUX:  Stack:    at System.Xml.XmlTextReaderImpl.Throw(Exception e)
   at System.Xml.XmlTextReaderImpl.ThrowWithoutLineInfo(String res, String arg)
   at System.Xml.XmlTextReaderImpl.ParseDoctypeDecl()
   at System.Xml.XmlTextReaderImpl.ParseDocumentContent()
   at System.Xml.XmlTextReaderImpl.Read()
   at System.Xml.XmlLoader.Load(XmlDocument doc, XmlReader reader, Boolean preserveWhitespace)
   at System.Xml.XmlDocument.Load(XmlReader reader)
   at Microsoft.Devdiv.Bootstrapper.DownloadManager.DownloadXml(String url, Int32& returnCode)
[1654:26C4][2017-06-28T11:40:46]i000: MUX:  Failed to download the update xml file from http://go.microsoft.com/fwlink/?LinkID=659005 Setup will not be updated.
[1654:26C4][2017-06-28T11:40:46]i052: Condition 'NOT (CurrentOperation = "Uninstall")' evaluates to true.
[1654:26C4][2017-06-28T11:40:46]i052: Condition 'NOT (CurrentOperation = "Uninstall")' evaluates to true.
[1654:26C4][2017-06-28T11:40:46]i052: Condition 'NOT (CurrentOperation = "Uninstall")' evaluates to true.
[1654:26C4][2017-06-28T11:40:46]i052: Condition 'NOT (CurrentOperation = "Uninstall")' evaluates to true.
[1654:26C4][2017-06-28T11:40:46]i052: Condition 'NOT (CurrentOperation = "Uninstall")' evaluates to true.
[1654:26C4][2017-06-28T11:40:46]i052: Condition 'NOT (CurrentOperation = "Uninstall")' evaluates to true.
[1654:26C4][2017-06-28T11:40:46]i052: Condition '(CurrentOperation = "Install") OR (CurrentOperation = "Repair")' evaluates to true.
[1654:26C4][2017-06-28T11:40:46]i000: MUX:  Configuring feed...
[1654:26C4][2017-06-28T11:40:46]i000: MUX:  Stop Block: NoApplicableUpdates : Update 3 requires a member of the Visual Studio 2015 family to be present or is blocked by another condition on your computer.
[1654:26C4][2017-06-28T11:40:46]i000: MUX:  Online feed url authoring not found
[1654:26C4][2017-06-28T11:40:46]i000: MUX:  Stop Block: NoApplicableUpdates : Update 3 requires a member of the Visual Studio 2015 family to be present or is blocked by another condition on your computer.
[1654:26C4][2017-06-28T11:40:46]i000: MUX:  Go to Blocker page.
[1654:26C4][2017-06-28T11:40:46]i199: Detect complete, result: 0x0

  [1]: https://i.stack.imgur.com/0t7KS.png

---

请参阅Visual Studio安装屏幕中的错误消息。您可以直接安装VisualStudio2015更新3，它只是Visual Studio的更新，适用于已安装任何VisualStudio2015版本的计算机

您需要下载更新为3的VisualStudio2015社区/企业/专业版要安装，请访问并单击“立即免费加入”，如果您没有订阅帐户。使用您的Microsoft帐户登录并加入Visual Studio Dev Essentials，然后单击“下载”菜单并使用关键字搜索，然后您将得到如下结果，单击所需的VisualStudio2015版本并找到要下载的下载链接。它应该会起作用

---

请参阅Visual Studio安装屏幕中的错误消息。您可以直接安装VisualStudio2015更新3，它只是Visual Studio的更新，适用于已安装任何VisualStudio2015版本的计算机

您需要下载更新为3的VisualStudio2015社区/企业/专业版要安装，请访问并单击“立即免费加入”，如果您没有订阅帐户。使用您的Microsoft帐户登录并加入Visual Studio Dev Essentials，然后单击“下载”菜单并使用关键字搜索，然后您将得到如下结果，单击所需的VisualStudio2015版本并找到要下载的下载链接。它应该会起作用

---

我尝试安装visual studio professional 2015和更新3，安装很好！谢谢！：）我试着安装visual studio professional 2015和更新3，安装很好！谢谢！：）