blocks|key|2684055|text|微软按照release+notes中的描述更改了托管模型。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2684056|在project.json中替换依赖项|style|CODE|2684057|2684058|+"Microsoft.AspNet.Server.IIS"："1.0.0-beta7“|blockquote|2684059|2684060|使用|2684061|2684062|+"Microsoft.AspNet.Server.Kestrel"："1.0.0-beta8“|2684063|2684064|2684065|2684066|在web.config的handlers部分中，删除除以下项之外的所有条目|2684067|<add+name="httpPlatformHandler"+path="*"+verb="*"+modules="httpPlatformHandler"+resourceType="Unspecified"+/>|code-block|syntax|javascript|2684068|完整的web.config将如下所示：|2684069|<?xml+version="1.0"+encoding="utf-8"?>
<configuration>
++<system.webServer>
++++<handlers>
++++++<add+name="httpPlatformHandler"+path="*"+verb="*"+modules="httpPlatformHandler"+resourceType="Unspecified"/>
++++</handlers>
++++<httpPlatform+processPath="%25DNX_PATH%25"+arguments="%25DNX_ARGS%25"+stdoutLogEnabled="false"+startupTimeLimit="3600"/>
++</system.webServer>
</configuration>|2684070|2684071|+RC1+:使用RC1时，在移动解决方案文件夹后出现错误。删除bin和obj文件夹后，一切都恢复正常。|BOLD|2684072|正如user764754所指出的，简单地重启Visual+Studio也会有所帮助。|2684073|entityMap|0|LINK|mutability|MUTABLE|url|http://blogs.msdn.com/b/webdev/archive/2015/10/15/announcing-availability-of-asp-net-5-beta8.aspx^0|4|D|0|0|1|C|0|0|0|0|0|0|0|0|0|0|1|A|C|8|0|0|3|A|0|0|0|0|6|V|3|Z|3|0|0^^$0|@$1|2|3|4|5|6|7|1J|8|@]|9|@$A|1K|B|1L|1|1M]]|C|$]]|$1|D|3|E|5|6|7|1N|8|@$A|1O|B|1P|F|G]]|9|@]|C|$]]|$1|H|3|-4|5|6|7|1Q|8|@]|9|@]|C|$]]|$1|I|3|J|5|K|7|1R|8|@]|9|@]|C|$]]|$1|L|3|-4|5|6|7|1S|8|@]|9|@]|C|$]]|$1|M|3|N|5|6|7|1T|8|@]|9|@]|C|$]]|$1|O|3|-4|5|6|7|1U|8|@]|9|@]|C|$]]|$1|P|3|Q|5|K|7|1V|8|@]|9|@]|C|$]]|$1|R|3|-4|5|6|7|1W|8|@]|9|@]|C|$]]|$1|S|3|-4|5|6|7|1X|8|@]|9|@]|C|$]]|$1|T|3|-4|5|6|7|1Y|8|@]|9|@]|C|$]]|$1|U|3|V|5|6|7|1Z|8|@$A|20|B|21|F|G]|$A|22|B|23|F|G]]|9|@]|C|$]]|$1|W|3|X|5|Y|7|24|8|@]|9|@]|C|$Z|10]]|$1|11|3|12|5|6|7|25|8|@$A|26|B|27|F|G]]|9|@]|C|$]]|$1|13|3|14|5|Y|7|28|8|@]|9|@]|C|$Z|10]]|$1|15|3|-4|5|6|7|29|8|@]|9|@]|C|$]]|$1|16|3|17|5|6|7|2A|8|@$A|2B|B|2C|F|18]|$A|2D|B|2E|F|G]|$A|2F|B|2G|F|G]]|9|@]|C|$]]|$1|19|3|1A|5|6|7|2H|8|@]|9|@]|C|$]]|$1|1B|3|-4|5|6|7|2I|8|@]|9|@]|C|$]]]|1C|$1D|$5|1E|1F|1G|C|$1H|1I]]]]

Microsoft changed the hosting model as described in the <a href="http://blogs.msdn.com/b/webdev/archive/2015/10/15/announcing-availability-of-asp-net-5-beta8.aspx">release notes</a>.

In <code>project.json</code> replace the dependency 

<blockquote>
 "Microsoft.AspNet.Server.IIS": "1.0.0-beta7" 
</blockquote>

with

<blockquote>
 "Microsoft.AspNet.Server.Kestrel": "1.0.0-beta8"
</blockquote>

<hr>

In <code>web.config</code> in the <code>handlers</code> section remove every entry except

<pre><code>&lt;add name="httpPlatformHandler" path="*" verb="*" modules="httpPlatformHandler" resourceType="Unspecified" /&gt;
</code></pre>

The complete <code>web.config</code> will look like this:

<pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
&lt;configuration&gt;
 &lt;system.webServer&gt;
 &lt;handlers&gt;
 &lt;add name="httpPlatformHandler" path="*" verb="*" modules="httpPlatformHandler" resourceType="Unspecified"/&gt;
 &lt;/handlers&gt;
 &lt;httpPlatform processPath="%DNX_PATH%" arguments="%DNX_ARGS%" stdoutLogEnabled="false" startupTimeLimit="3600"/&gt;
 &lt;/system.webServer&gt;
&lt;/configuration&gt;
</code></pre>

<hr>

RC1: While using RC1 I had the error after moving the solution folder. After deleting the <code>bin</code> and <code>obj</code> folders everything worked again. 
As user764754 noted, simply restarting Visual Studio can also help.

blocks|key|2896077|text|这是可能的升级，我发现我不得不通过新的更新的模板here。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2896078|在wwwroot中更新您的web.config以包含：|2896079|<httpPlatform+processPath="%25DNX_PATH%25"+arguments="%25DNX_ARGS%25"+stdoutLogEnabled="false"+startupTimeLimit="3600"/>|code-block|syntax|javascript|2896080|您还需要通过修改您的project.json来更改项目调试using+Kestrel的方式：|2896081|"commands":+{
++"web":+"Microsoft.AspNet.Server.Kestrel"
},
"dependencies":+{
++"Microsoft.AspNet.IISPlatformHandler":+"1.0.0-beta8",
++"Microsoft.AspNet.Server.Kestrel":+"1.0.0-beta8",
}|2896082|并修改您的hosting.ini|2896083|server=Microsoft.AspNet.Server.Kestrel|2896084|并将此添加到startup.cs中的Configure方法中|2896085|//+Add+the+platform+handler+to+the+request+pipeline.
app.UseIISPlatformHandler();+|2896086|添加这些引用应该允许您运行项目。|2896087|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/aspnet/Templates/tree/dev/src/BaseTemplates/StarterWeb|1|https://github.com/aspnet/Announcements/issues/70^0|O|4|0|0|0|0|T|D|1|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|18|8|@]|9|@$A|19|B|1A|1|1B]]|C|$]]|$1|D|3|E|5|6|7|1C|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|1D|8|@]|9|@]|C|$I|J]]|$1|K|3|L|5|6|7|1E|8|@]|9|@$A|1F|B|1G|1|1H]]|C|$]]|$1|M|3|N|5|H|7|1I|8|@]|9|@]|C|$I|J]]|$1|O|3|P|5|6|7|1J|8|@]|9|@]|C|$]]|$1|Q|3|R|5|H|7|1K|8|@]|9|@]|C|$I|J]]|$1|S|3|T|5|6|7|1L|8|@]|9|@]|C|$]]|$1|U|3|V|5|H|7|1M|8|@]|9|@]|C|$I|J]]|$1|W|3|X|5|6|7|1N|8|@]|9|@]|C|$]]|$1|Y|3|-4|5|6|7|1O|8|@]|9|@]|C|$]]]|Z|$10|$5|11|12|13|C|$14|15]]|16|$5|11|12|13|C|$14|17]]]]

It is possible to upgrade, i found i had to look through the new updated templates <a href="https://github.com/aspnet/Templates/tree/dev/src/BaseTemplates/StarterWeb" rel="noreferrer">here</a>.

Update your web.config in wwwroot to include:

<pre><code>&lt;httpPlatform processPath="%DNX_PATH%" arguments="%DNX_ARGS%" stdoutLogEnabled="false" startupTimeLimit="3600"/&gt;
</code></pre>

You will also need to change the way the project debugs <a href="https://github.com/aspnet/Announcements/issues/70" rel="noreferrer">using Kestrel</a>
by modifying your project.json:

<pre><code>"commands": {
 "web": "Microsoft.AspNet.Server.Kestrel"
},
"dependencies": {
 "Microsoft.AspNet.IISPlatformHandler": "1.0.0-beta8",
 "Microsoft.AspNet.Server.Kestrel": "1.0.0-beta8",
}
</code></pre>

and modifying your hosting.ini

<pre><code>server=Microsoft.AspNet.Server.Kestrel
</code></pre>

and adding this to the Configure method in startup.cs

<pre><code>// Add the platform handler to the request pipeline.
app.UseIISPlatformHandler(); 
</code></pre>

adding these references should allow you to run the project.

blocks|key|125665|text|在从beta7+->+beta8升级时，我遇到了这个问题，Ben+M和Domysee提供的建议对我很有效。然而，我的一位同事在运行我们仅针对dnxcore50的项目时仍然存在问题。如果您确保已运行以下命令：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|125666|dnvm+install+1.0.0-beta8+-r+coreclr
dnvm+install+1.0.0-beta8+-r+coreclr+-arch+x86|code-block|syntax|javascript|125667|特别是第二个命令，它在他的机器上修复了它。您还可以仔细检查此文件夹中是否有dnx.exe：|125668|%25userprofile%25\.dnx\runtimes\dnx-coreclr-win-x86.1.0.0-beta8\bin|125669|entityMap^0|1Y|9|0|0|11|7|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|T|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|M|3|N|5|H|7|X|8|@]|D|@]|E|$I|J]]|$1|O|3|-4|5|6|7|Y|8|@]|D|@]|E|$]]]|P|$]]

When upgrading from beta7 -> beta8 I had this issue and the suggestions provided by Ben M and Domysee worked for me. However, one of my colleagues was still having problems running our project which targets <code>dnxcore50</code> only. If you make sure you have run the following commands:

<pre><code>dnvm install 1.0.0-beta8 -r coreclr
dnvm install 1.0.0-beta8 -r coreclr -arch x86
</code></pre>

It was the second command in particular that fixed it on his machine. You can also double-check this folder has a <code>dnx.exe</code> in it:

<pre><code>%userprofile%\.dnx\runtimes\dnx-coreclr-win-x86.1.0.0-beta8\bin
</code></pre>

blocks|key|2684111|text|对我来说，这个问题是通过关闭Visual+Studio、删除|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2684112|project.lock.json|code-block|syntax|javascript|2684113|并再次启动Visual+Studio。|2684114|编辑：我使用的是RC1。|offset|length|style|BOLD|2684115|entityMap^0|0|0|0|0|2|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|T|8|@$K|U|L|V|M|N]]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

For me the problem was solved by closing down Visual Studio, deleting 

<pre><code>project.lock.json
</code></pre>

and starting Visual Studio again.

Edit: I was using RC1.

blocks|key|2896161|text|无论如何，这是一个generic+error+message，可以用来转移注意力，解决httpPlatformHandler无法启动给定可执行文件(在本例中是dnx)的任何数量的问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2896162|在我的例子中，我收到这个错误的直接原因是误解了launchSettings.json文件。我试图为我的应用程序启用https端点，但在我的applicationUrl中错误地复制了sslport。据我所知，applicationUrl应该是应用程序的http主机名/端口，通过填写sslPort，它只是将IIS+Express环境配置为在applicationUrl中给定的主机名上、在sslPort中提供的端口上侦听https。|2896163|例如：|2896164|++"iisSettings":+{
+++++"windowsAuthentication":+false,
+++++"anonymousAuthentication":+true,
+++++"iisExpress":+{
+++++++"applicationUrl":+"http://localhost:44000",
+++++++"sslPort":+44300
++++++}
++}|code-block|syntax|javascript|2896165|在localhost上提供以下两个终结点。|2896166|端口44400上的|2896167|Http+|unordered-list-item|2896168|端口44300|2896169|上的Https|2896170|如果在applicationUrl和sslPort设置中使用相同的端口，则会收到与此线程相关的错误。|2896171|对于我来说，在RC1上也是如此|style|BOLD|2896172|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/aspnet/Home/issues/1194#issuecomment-169930392^0|9|L|0|0|0|0|0|0|0|0|0|0|0|7|3|0^^$0|@$1|2|3|4|5|6|7|1B|8|@]|9|@$A|1C|B|1D|1|1E]]|C|$]]|$1|D|3|E|5|6|7|1F|8|@]|9|@]|C|$]]|$1|F|3|G|5|6|7|1G|8|@]|9|@]|C|$]]|$1|H|3|I|5|J|7|1H|8|@]|9|@]|C|$K|L]]|$1|M|3|N|5|6|7|1I|8|@]|9|@]|C|$]]|$1|O|3|P|5|6|7|1J|8|@]|9|@]|C|$]]|$1|Q|3|R|5|S|7|1K|8|@]|9|@]|C|$]]|$1|T|3|U|5|S|7|1L|8|@]|9|@]|C|$]]|$1|V|3|W|5|6|7|1M|8|@]|9|@]|C|$]]|$1|X|3|Y|5|6|7|1N|8|@]|9|@]|C|$]]|$1|Z|3|10|5|6|7|1O|8|@$A|1P|B|1Q|11|12]]|9|@]|C|$]]|$1|13|3|-4|5|6|7|1R|8|@]|9|@]|C|$]]]|14|$15|$5|16|17|18|C|$19|1A]]]]

For what it's worth, this is a <a href="https://github.com/aspnet/Home/issues/1194#issuecomment-169930392">generic error message</a> that could serve as a red herring to any number of issues where the httpPlatformHandler can't launch the given executable (dnx in this case).

In my case I received this error as a direct result of misunderstanding the launchSettings.json file. I was trying to enable the https endpoint for my application and mistakenly duplicated the sslport in my applicationUrl. As I understand it the applicationUrl should be the http hostname/port of the application and by filling in the sslPort it just configures the IIS Express environment to listen for https on the hostname given in the applicationUrl on the port provided in sslPort.

For example:

<pre><code> "iisSettings": {
 "windowsAuthentication": false,
 "anonymousAuthentication": true,
 "iisExpress": {
 "applicationUrl": "http://localhost:44000",
 "sslPort": 44300
 }
 }
</code></pre>

Provides the following two endpoints on localhost. 

<ul>
<li>Http over port 44400</li>
<li>Https over port 44300</li>
</ul>

If you were to have the same port in the applicationUrl and sslPort settings, you would receive the error associated with this thread.

This is true for me on RC1

blocks|key|2896255|text|检查web.config文件中是否有无效条目。例如，在那里有"entityFramework“标签会给我带来这个问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2896256|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Check web.config file for invalid entries. For example, having "entityFramework" tag there causes this problem for me.

blocks|key|2896258|text|我在切换设置时遇到了这个问题，并且在项目>属性>调试中禁用了“启用匿名身份验证”。确保它已启用。关闭并重新启动项目，然后重试。希望这能有所帮助。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|2896259|entityMap^0|V|8|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

I had this trouble when I'm toggling settings and have disabled the "Enable Anonymous Authentication" in the Project > Properties > Debug. Make sure that it is enabled.
Close and relaunched the project then try again. 
Hope this helps.

blocks|key|2896267|text|我使用了RC1和EF第一代码方法。启动调查的好主意是使用以下选项运行项目：“启动项目而不删除错误”(Ctrl%2BF5)。然后，我得到了更有意义的错误：“无法读取配置节'entityFramework‘，因为它缺少节声明。”由于web.config文件的缘故，它对我不起作用。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2896268|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I used RC1 and EF First Code Approach. Good idea to start investigation is to run project with option: "Start project without debbuging" (Ctrl+F5). Then I get more meaningful error for me: "The configuration section 'entityFramework' cannot be read because it is missing a section declaration." It didn't work for me because of web.config file.

blocks|key|2896290|text|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2896291|更新dnvm|ordered-list-item|2896292|将global.json+sdk版本更改为dnvm的默认|2896293|无需触摸project.json或dnvm|2896294|2896295|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|-4|4|5|6|K|7|@]|8|@]|9|$]]|$1|A|3|B|4|C|6|L|7|@]|8|@]|9|$]]|$1|D|3|E|4|C|6|M|7|@]|8|@]|9|$]]|$1|F|3|G|4|C|6|N|7|@]|8|@]|9|$]]|$1|H|3|-4|4|5|6|O|7|@]|8|@]|9|$]]|$1|I|3|-4|4|5|6|P|7|@]|8|@]|9|$]]]|J|$]]

<ol>
<li>Update dnvm</li>
<li>Change global.json sdk version as the dnvm's default</li>
<li>No need to touch project.json or project.lock.json</li>
</ol>

blocks|key|124821|text|我遇到这个问题是由于项目配置尝试启动https://localhost而不是http。右键单击URL项目，在"Debug“下，将"App+URL”调整为http而不是https。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|124822|📷|atomic|124823|​|124824|解决这个问题的另一种方法是将启动程序从"IIS+Express“切换到"Web”|124825|entityMap|0|LINK|mutability|MUTABLE|url|https://localhost/|1|IMAGE|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/a8b53e9c5b0b6ca9db0e3e927ff8205a.png|imageAlt^0|I|H|0|0|0|1|1|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@$A|Z|B|10|1|11]]|C|$]]|$1|D|3|E|5|F|7|12|8|@]|9|@$A|13|B|14|1|15]]|C|$]]|$1|G|3|H|5|6|7|16|8|@]|9|@]|C|$]]|$1|I|3|J|5|6|7|17|8|@]|9|@]|C|$]]|$1|K|3|-4|5|6|7|18|8|@]|9|@]|C|$]]]|L|$M|$5|N|O|P|C|$Q|R]]|S|$5|T|O|U|C|$V|W|X|-4]]]]

I hit this problem due to the project config trying launch <a href="https://localhost" rel="noreferrer">https://localhost</a> instead of http. Right click on the webproject, under "Debug" and adjust "App URL" to be http instead of https. 
<a href="https://i.stack.imgur.com/NnjFs.png" rel="noreferrer"><img src="https://i.stack.imgur.com/NnjFs.png" alt="enter image description here"></a>

Another way to get around this was switching the launcher from "IIS Express" to "Web"

blocks|key|127816|text|对于其他有这个问题的人，在其他解决方案不起作用的情况下-我在这个帖子中找到了答案：Forcing+to+use+SSL:+An+error+ocurred+attempting+to+determine+the+process+id+of+the+DNX+process+hosting+your+application|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|127817|如果您的项目使用或强制使用SSL，请先运行它而不进行调试(CTRL%2BF5)，它会要求您生成一个本地SSL证书，然后调试就会起作用，错误就会消失。|127818|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/36362927/forcing-to-use-ssl-an-error-ocurred-attempting-to-determine-the-process-id-of-t/36858740#36858740^0|15|3B|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]]|C|$]]|$1|D|3|E|5|6|7|R|8|@]|9|@]|C|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]]]

For other people having this problem, in cases in which the other solutions don't work - I found the answer in this thread:
<a href="https://stackoverflow.com/questions/36362927/forcing-to-use-ssl-an-error-ocurred-attempting-to-determine-the-process-id-of-t/36858740#36858740">Forcing to use SSL: An error ocurred attempting to determine the process id of the DNX process hosting your application</a>

I your project uses or enforces SSL run it without debugging (CTRL+F5) first, it will ask you to generate a local SSL cert, and after that debugging will work and the error will be gone.

blocks|key|125754|text|有太多的事情可能会导致这个错误。以下是一些对我有效的方法：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|125755|125756|只需删除wwwroot文件夹中的web.config即可。它将在compilation.|ordered-list-item|offset|length|style|CODE|125757|If上正确重建，您正在尝试使用SSL，并且在您的IIS+Express中，将您的SSL+Cert移动到Trusted+Root+Certification+Authorities文件夹不起作用。在您试图运行的项目的Properties的Debug选项卡中。尝试取消选中Enable+SSL复选框，然后再次单击它以启用它并获取不同的端口。您可能需要执行此操作几次。|125758|125759|entityMap^0|0|0|4|7|G|A|0|F|3|O|B|14|8|1F|12|2Z|A|3A|5|3Q|A|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|P|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|Q|8|@$F|R|G|S|H|I]|$F|T|G|U|H|I]]|9|@]|A|$]]|$1|J|3|K|5|E|7|V|8|@$F|W|G|X|H|I]|$F|Y|G|Z|H|I]|$F|10|G|11|H|I]|$F|12|G|13|H|I]|$F|14|G|15|H|I]|$F|16|G|17|H|I]|$F|18|G|19|H|I]]|9|@]|A|$]]|$1|L|3|-4|5|6|7|1A|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|1B|8|@]|9|@]|A|$]]]|N|$]]

There are just so many things that could cause this error. Here are a few that worked for me:

<ol>
<li>Just delete the <code>web.config</code> in your <code>wwwroot</code> folder. It will get recreated correctly on compilation.</li>
<li>If you are trying to use <code>SSL</code> and in your <code>IIS Express</code> and moving your <code>SSL Cert</code> to the <code>Trusted Root Certification Authorities</code> folder didn't work. In the <code>Debug</code> tab of the <code>Properties</code> of the project you are trying to run. Try unclicking the <code>Enable SSL</code> checkbox and then clicking it again to enable it and get a different port. You may have to do this a few times.</li>
</ol>

blocks|key|2684521|text|假设您正在运行启用了SSL的IIS+Express，具体取决于您的安装，您必须将您的IIS+Express开发证书(颁发给"localhost"/由“localhost”颁发)放入Local+Computer\Personal\Certificate或Local+Computer\Trusted+Root+Certification\Certificate中。其中一个应该是有效的。(使用Windows10%2B+VS2015)。HTH|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2684522|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Assuming you are running IIS Express with SSL Enabled depending on your installation you will have to put your IIS Express Development Certificate(Issued To "localhost"/ Issued By "localhost") in either [Local Computer\Personal\Certificates] or [Local Computer\Trusted Root Certification\Certificates]. One of those should work. (Using Windows 10 + VS2015). HTH

blocks|key|2896465|text|在Visual+Studio中：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2896466|在学习本教程的过程中，我收到了类似的错误。|2896467|首先，我收到错误消息：“试图确定dotnet.exe的进程id时出错...”我采取了以下步骤。|2896468|2896469|我在没有调试CTRL%2BF5的情况下启动了我的应用程序。|ordered-list-item|2896470|我随后看到了接受本地主机的自签名证书的选项。|2896471|我按照提示操作，然后我可以使用在项目调试设置中启用AppUrl后复制的AppUrl来访问我的应用程序。|2896472|2896473|在尝试一些方法来解决这个错误时，我也遇到了这个错误。“试图确定承载您的应用程序的DNX进程的进程id时出错”|2896474|这是由于应用程序的另一个实例正在运行而引起的。|2896475|我希望这个答案能帮助到一些人。|2896476|entityMap^0|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|X|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|Y|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]|$1|G|3|H|5|I|7|10|8|@]|9|@]|A|$]]|$1|J|3|K|5|I|7|11|8|@]|9|@]|A|$]]|$1|L|3|M|5|I|7|12|8|@]|9|@]|A|$]]|$1|N|3|-4|5|6|7|13|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|14|8|@]|9|@]|A|$]]|$1|Q|3|R|5|6|7|15|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|16|8|@]|9|@]|A|$]]|$1|U|3|-4|5|6|7|17|8|@]|9|@]|A|$]]]|V|$]]

<h3>In Visual Studio:</h3>

While following this tutorial I received a similar error.

First, I received the error: "An error occurred attempting to determine the process id of dotnet.exe..." I took the following steps.

<ol>
<li>I started my application without debugging CTRL+F5.</li>
<li>I was then presented with an option to accept a self-signed certificate for localhost.</li>
<li>I followed the prompts and then I was able to visit my application using the AppUrl I copied over after enabling SSL in project debug settings. </li>
</ol>

While trying a few things to solve that error I also came across this error.
"An error occurred attempting to determine the process id of the DNX process hosting your application"

Which was caused by having another instance of the application running.

I hope this answer helps someone.

blocks|key|127969|text|我刚刚又发现了一个问题，正是这个问题导致了这个问题！|type|unstyled|depth|inlineStyleRanges|entityRanges|data|127970|项目根目录中的web.config有一些不可靠的IIS重写规则来强制执行HTTPS。删除这些规则就解决了问题。|offset|length|style|CODE|127971|entityMap^0|0|7|A|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@$D|L|E|M|F|G]]|9|@]|A|$]]|$1|H|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|I|$]]

I've just discovered one more problem that was causing this!

<code>web.config</code> in project root had some dodgy IIS URL rewrite rules to enforce HTTPS. Removing those rules solved the problem.

blocks|key|124996|text|另一个潜在的解决方案|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|124997|对于任何使用SSL设置的人，我发现只要将launchSettings.json文件中的SSL端口更改为另一个附近的端口就解决了问题。|CODE|124998|仅供参考，我在使用原始端口的机器上找不到任何东西，也没有收到端口使用错误。|124999|entityMap^0|0|A|0|K|J|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|P|8|@$9|Q|A|R|B|H]]|D|@]|E|$]]|$1|I|3|J|5|6|7|S|8|@]|D|@]|E|$]]|$1|K|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|L|$]]

Another potential solution 
For anyone playing with SSL settings, I found just changing the SSL port in the <code>launchSettings.json</code> file to another nearby port solved the problem.

FYI, I couldn't find anything on the machine using the original port, nor did I get a port in use error.

blocks|key|125951|text|在我的案例中，在asp+net+core1.1，.net框架4.5.2项目中，错误并不是指dnx，因为它已经不存在了。相反，它引用了项目名称exe。该错误的另一个版本指的是无法连接到iis+express。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|125952|问题在于引入了规范主机名重写规则，该规则试图强制所有连接具有以www开头的主机名。例如，将gty.org重定向到www.gty.org以符合我们的ssl证书。这在生产环境中很好，但您不能强迫https://localhost:44347/以www开头，并期望iis+express能够处理它。|offset|length|style|BOLD|125953|<rule+name="CanonicalHostNameAddwww"+enabled="true"+stopProcessing="true">
++++++<match+url="(.*)"+ignoreCase="true"+/>
++++++<conditions+logicalGrouping="MatchAll">++++++++
++++++++<add+input="{HTTP_HOST}"+negate="true"+pattern="%5Ewww\."+/>
++++++</conditions>
++++++<action+type="Redirect"+url="http://www.{HTTP_HOST}{HTTP_URL}"++appendQueryString="false"+redirectType="Permanent"+/>
</rule>|code-block|syntax|javascript|125954|解决方案是在visual+studio中运行时注释掉规则或添加条件：|125955|<add+input="{HTTP_HOST}"+negate="true"+pattern="%5Elocalhost"+/>|125956|entityMap|0|LINK|mutability|MUTABLE|url|https://localhost:44347/^0|0|7|9|2N|O|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Z|8|@$D|10|E|11|F|G]]|9|@$D|12|E|13|1|14]]|A|$]]|$1|H|3|I|5|J|7|15|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|16|8|@]|9|@]|A|$]]|$1|O|3|P|5|J|7|17|8|@]|9|@]|A|$K|L]]|$1|Q|3|-4|5|6|7|18|8|@]|9|@]|A|$]]]|R|$S|$5|T|U|V|A|$W|X]]]]

In my case in an asp net core 1.1, .net framework 4.5.2 project, the error did not refer to dnx since that is no more. Instead it referred to the project name exe. Another version of the error referred to simply being unable to connect to iis express. 

The problem was the introduction of a canonical host name rewrite rule that tries to force all connections to have a host name that begins with www. e.g. redirecting gty.org to www.gty.org to conform to our ssl cert. This is fine in production but you can't force <a href="https://localhost:44347/" rel="nofollow noreferrer">https://localhost:44347/</a> to begin with www and expect iis express to be able to handle it. 

<pre><code>&lt;rule name="CanonicalHostNameAddwww" enabled="true" stopProcessing="true"&gt;
 &lt;match url="(.*)" ignoreCase="true" /&gt;
 &lt;conditions logicalGrouping="MatchAll"&gt; 
 &lt;add input="{HTTP_HOST}" negate="true" pattern="^www\." /&gt;
 &lt;/conditions&gt;
 &lt;action type="Redirect" url="http://www.{HTTP_HOST}{HTTP_URL}" appendQueryString="false" redirectType="Permanent" /&gt;
&lt;/rule&gt;
</code></pre>

The solution was to comment out the rule when running in visual studio or add a condition:

<pre><code>&lt;add input="{HTTP_HOST}" negate="true" pattern="^localhost" /&gt;
</code></pre>

I get this error message when I'm trying to start the application.

<blockquote>
 An error occurred attempting to determine the process id of the DNX
 process hosting your application
</blockquote>

Is there a way to fix the problem?

An error occurred attempting to determine the process id of the DNX process hosting your application

Visual Studio

身份验证

当我尝试启动应用程序时，收到此错误消息。试图确定承载您的应用程序的DNX进程的进程id时出错有没有办法解决这个问题？

问试图确定承载您的应用程序的DNX进程的进程id时出错
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