blocks|key|3395121|text|继续努力！|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|3395122|我有过几次这样的经历(包括今天)，每次，在没有改变任何东西的情况下，当我再次尝试的时候，它都起了作用。|3395123|有时是第二次，另一些时间是20分钟后。|3395124|entityMap^0|0|5|0|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@$9|M|A|N|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|O|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|P|8|@]|D|@]|E|$]]|$1|J|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|K|$]]

Keep Trying!

I have had this a few times (including today), and each time, without changing anything, it has worked when I tried again. 

Sometimes the 2nd time, other times 20 minutes later.

blocks|key|3395141|text|这可能是DNS污染的问题，至少对于我(中国)来说是这样。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|3395142|如果您也在中国或一些有DNS污染问题的地方，您也可以通过修改Mac的DNS+(以8.8.8.8为例)来解决这个问题。|CODE|3395143|3395144|我在我的iPad应用程序中发现了这个错误&这是随机发生的，太无聊了。继续尝试对我来说不是一个好的解决方案，尽管它可能会在某种程度上奏效。最后，我只是改变了我的Wi，现在不再有错误。步骤：|3395145|你的设备，设置/Wi|ordered-list-item|3395146|选择连接的Wi壶|3395147|按DHCP/DNS|3395148|设置为8.8.8.8|3395149|3395150|3395151|entityMap^0|4|5|0|14|7|0|0|0|0|0|0|3|7|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|11|8|@$9|12|A|13|B|H]]|D|@]|E|$]]|$1|I|3|-4|5|6|7|14|8|@]|D|@]|E|$]]|$1|J|3|K|5|6|7|15|8|@]|D|@]|E|$]]|$1|L|3|M|5|N|7|16|8|@]|D|@]|E|$]]|$1|O|3|P|5|N|7|17|8|@]|D|@]|E|$]]|$1|Q|3|R|5|N|7|18|8|@]|D|@]|E|$]]|$1|S|3|T|5|N|7|19|8|@$9|1A|A|1B|B|H]]|D|@]|E|$]]|$1|U|3|-4|5|6|7|1C|8|@]|D|@]|E|$]]|$1|V|3|-4|5|6|7|1D|8|@]|D|@]|E|$]]|$1|W|3|-4|5|6|7|1E|8|@]|D|@]|E|$]]]|X|$]]

It might be DNS Pollution issue, at least for my case (in China).

If you're also in China or some places that has DNS Pollution issue, you might solve this by modifying the DNS (to <code>8.8.8.8</code> as an example) for your Mac as well.

<hr>

I got this error inner my iPad App &amp; this happens randomly, it's such boring. Keep trying is not a good solution for me, though it might works somehow. Finally, I just changed my Wi-Fi DNS and no more error now. Steps:

<ol>
<li>Your device, Settings/Wi-Fi</li>
<li>Choose connected Wi-Fi pot</li>
<li>Press DHCP/DNS</li>
<li>Set to <code>8.8.8.8</code></li>
</ol>

blocks|key|2513315|text|我重新启动了我的MacBook+Pro，然后我重新构建，错误被修复了。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2513316|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 restarted my MacBook Pro and then I build again, the error was fixed.

blocks|key|2513415|text|我也面临着同样的问题。其实我经常面对它。以下三个步骤一直适用于我|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2513416|将DNS更改为8.8.8.8和4.2.2.2|ordered-list-item|2513417|打开net.properties并将"#+https.proxyPort=443“更改为"https.proxyPort=80”。你可以在这里找到/Applications/Xcode.app/Contents/Applications/Application+Loader.app/Contents/MacOS/itms/java/lib/net.properties+net.properties|2513418|打开应用程序加载器->首选项->高级和未检查符号和Aspera。确保检查了DAV。|2513419|2513420|2513421|感谢所有。现在，您可以使用应用程序加载程序和Xcode提交应用程序。|2513422|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$]]|$1|E|3|F|5|D|7|Q|8|@]|9|@]|A|$]]|$1|G|3|H|5|D|7|R|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|S|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|T|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|V|8|@]|9|@]|A|$]]]|N|$]]

I faced same problem. Actually i face it often. Following three steps work for me always

<ol>
<li>Change DNS to 8.8.8.8 and 4.2.2.2</li>
<li>Open net.properties and change "# https.proxyPort=443" to "https.proxyPort=80". You can find net.properties here /Applications/Xcode.app/Contents/Applications/Application Loader.app/Contents/MacOS/itms/java/lib/net.properties</li>
<li>Open Application Loader->Preferences->Advanced and uncheck Signiant and Aspera. Make sure DAV is checked.</li>
</ol>

Thants all. Now you can submit app using both application loader and Xcode.

blocks|key|3395224|text|我也面临着同样的问题，原来是VPN相关的。如果你是在一个设备上对公司网络进行测试，很可能你的Mac有正确的VPN设置，但你的手机没有。连接电话到企业VPN，用于部署到设备上查看公司服务器的应用程序。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|3395225|entityMap^0|1V|A|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 faced the same problem, it turned out to be VPN related. If you are testing on a device against a corporate network, chances are your Mac has proper VPN set up, but your phone does not. Connect phone to the corporate VPN for your apps deployed to device to see corporate servers.

blocks|key|2513469|text|找不到具有指定主机名的服务器。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2513470|我也面临着同样的问题，就我而言，是因为-|2513471|服务器配置不正确。|ordered-list-item|2513472|服务器订阅已过期|2513473|2513474|2513475|联系服务器托管公司解决我的问题。|2513476|我认为这不是苹果的暂时错误，也不是与Xcode有关的错误？|2513477|entityMap^0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|S|8|@]|9|@]|A|$]]|$1|G|3|H|5|F|7|T|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|U|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|V|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|W|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|X|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|P|$]]

A server with the specified hostname could not be found.

I faced the same problem, In my case it was because of- 

<ol>
<li>Server was not configured properly.</li>
<li>Server subscription has been expired</li>
</ol>

Contacting to server hosting company resolve my problem.

I think this is not temporary error at apple or something to do with Xcode?

blocks|key|2513492|text|这解决了我的问题，当我试图升级到El+Capitan时：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2513493|sudo+softwareupdate+--clear-catalog|code-block|syntax|javascript|2513494|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

That fixed the problem for me, when trying to upgrade to El Capitan:

<pre><code>sudo softwareupdate --clear-catalog
</code></pre>

blocks|key|2535337|text|首先检查你的互联网连接..。去旅行，并通过搜索谷歌检查(不要只尝试google.com+)。因为它可以缓存)。如果它运行良好，那么现在尝试在您的应用程序。一定会成功的。这是在没有适当的互联网连接的情况下被触发的。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2535338|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|$]]

First of all check your internet connection.. go to safari and check by searching something on google(dont try google.com only.. because it can be cached). If it is working fine, then try now in your app. It must work. This is fired while not having proper internet connection.

blocks|key|2513502|text|我收到了A+server+with+the+specified+hostname+could+not+be+found.。我发现我的MacOS应用程序打开了应用程序沙箱。避免问题的最简单的方法是关闭沙箱。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2513503|entityMap^0|4|1K|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 received <code>A server with the specified hostname could not be found.</code>. I figured out my MacOS app had turned on App Sandboxing. The easiest way to avoid problem is to turn off Sandbox.

blocks|key|2513523|text|只是为了分享我的经历|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2513524|这是由共享>+Internet共享+It+Preferences造成的。|offset|length|style|BOLD|2513525|我正在测试并创建了NAT64+Network，取消检查它解决了我的问题。|2513526|​|2513527|📷|atomic|2513528|2513529|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://developer.qcloudimg.com/http-save/yehe-900000/8b4b39ab705534ab4c8e42f7d48e3cb0.png|imageAlt^0|0|3|E|L|B|0|9|D|0|0|0|1|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]|$D|12|E|13|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|14|8|@$D|15|E|16|F|G]]|9|@]|A|$]]|$1|J|3|K|5|6|7|17|8|@]|9|@]|A|$]]|$1|L|3|M|5|N|7|18|8|@]|9|@$D|19|E|1A|1|1B]]|A|$]]|$1|O|3|K|5|6|7|1C|8|@]|9|@]|A|$]]|$1|P|3|-4|5|6|7|1D|8|@]|9|@]|A|$]]]|Q|$R|$5|S|T|U|A|$V|W|X|-4]]]]

Just to share my experience

It was caused by the Sharing > Internet Sharing inside System Preferences

I was testing and created NAT64 Network unchecking it solved my problem.

<a href="https://i.stack.imgur.com/bd4j4.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/bd4j4.png" alt="enter image description here"></a>

blocks|key|2513534|text|当设备打开移动数据并且没有wifi连接时，我收到了这条消息，但是互联网没有正常连接。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2513535|尝试用互联网连接到wifi网络或关闭移动数据。|2513536|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

I got this message when the device has mobile data turned on and no wifi connection, but the internet is not properly connected.

Try to connect to a wifi network with an internet connection or turning off the mobile data.

blocks|key|3395387|text|当我们为API服务从一个域转换到另一个域时，我遇到了这个问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3395388|重新启动网络路由器/调制解调器解决了此问题。|3395389|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

I faced this issue when we changed from one domain to another for API service.

Restarting the network router/modem fixed this issue.

blocks|key|2513598|text|当我的URL中的"/“丢失时，我收到了这个错误消息。希望这能帮到别人。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2513599|例:实际的URL是"https://www.myweb.com/login“.My+URL，"https://www.myweb.comlogin”导致了这个错误。|offset|length|2513600|entityMap|0|LINK|mutability|MUTABLE|url|https://www.myweb.com/login|1|https://www.myweb.comlogin/^0|0|A|R|0|1B|Q|1|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Q|8|@]|9|@$D|R|E|S|1|T]|$D|U|E|V|1|W]]|A|$]]|$1|F|3|-4|5|6|7|X|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|M]]|N|$5|I|J|K|A|$L|O]]]]

I got this error message when "/" from my URL is missing . Hope this help someone.

ex: actual URL is "<a href="https://www.myweb.com/login" rel="nofollow noreferrer">https://www.myweb.com/login</a>" .My URL which "<a href="https://www.myweb.comlogin" rel="nofollow noreferrer">https://www.myweb.comlogin</a>" caused this error

blocks|key|2535464|text|在Xcode中，选择Target+->功能，并检查“传出连接(客户端)”以启用App。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2535465|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|$]]

In Xcode, select Target -> Capabilities, and check "Outgoing Connections (Client)" to enable App Sandbox.

blocks|key|3395476|text|对我来说，在“功能”选项卡中启用传出连接是一个问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3395477|​|3395478|📷|atomic|offset|length|3395479|3395480|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://developer.qcloudimg.com/http-save/yehe-900000/d91335512a3dea249d9816d8ac4dc422.png|imageAlt^0|0|0|0|1|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@$G|V|H|W|1|X]]|A|$]]|$1|I|3|C|5|6|7|Y|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|K|$L|$5|M|N|O|A|$P|Q|R|-4]]]]

For me it was an issue with enabling Outgoing connections in Capabilities tab.

<a href="https://i.stack.imgur.com/r25rA.png" rel="noreferrer"><img src="https://i.stack.imgur.com/r25rA.png" alt="enter image description here"></a>

blocks|key|2513671|text|关闭推送通知。然后，重新启动XCode并打开推送通知。对我来说很管用。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|2513672|entityMap^0|A|9|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|$]]

Turn off the push notification. Then,Restart your XCode and Turn back ON the Push Notification. It works for me.

blocks|key|2535551|text|如果问题发生在MacOS项目中，如@nstein在此answer中所评论的，只需转到Target的Signing+&+Capabilities并允许Incoming和Outgoing网络选项即可。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2535552|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/47219898/1404324^0|16|6|1D|M|22|8|2B|8|Q|6|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@$9|O|A|P|B|C]|$9|Q|A|R|B|C]|$9|S|A|T|B|C]|$9|U|A|V|B|C]]|D|@$9|W|A|X|1|Y]]|E|$]]|$1|F|3|-4|5|6|7|Z|8|@]|D|@]|E|$]]]|G|$H|$5|I|J|K|E|$L|M]]]]

If the problem occured in a MacOS project, as @nstein commented in this <a href="https://stackoverflow.com/a/47219898/1404324">answer</a> just go to your <code>Target</code>'s <code>Signing &amp; Capabilities</code> and allow <code>Incoming</code> and <code>Outgoing</code> network options.

blocks|key|2513708|text|只要重启你的网络路由器设备。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|2513709|大胸。如果它已经具有自动DNS设置。|blockquote|2513710|2513711|entityMap^0|2|2|0|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@$9|M|A|N|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|O|8|@]|D|@]|E|$]]|$1|I|3|-4|5|6|7|P|8|@]|D|@]|E|$]]|$1|J|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|K|$]]

Just restart your network router device.
<blockquote>
Obs. If it is already has automatic DNS settings.
</blockquote>

blocks|key|2513720|text|在我的例子中，这是在上传之前验证构建时发生的。就在那之前我们遇到了服务器问题。我试过重新启动Mac，多次退出Xcode，但失败了。同时也要尝试从组织者那里签入，但是联系还没有建立起来。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2513721|稍后，我尝试登录，并完成了，然后验证和构建得到上传。|2513722|用于xcode+12.4.1|2513723|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

In my case this was occurring while validating build before upload. Just before that we had server issue.
I tried restart Mac, quit Xcode multiple times, doesn't work. Also try to sign in from organiser but connection was not getting established.
Later from account, I tried sign in and thats done and then validate and build gets uploaded.
For xcode 12.4.1

When I try to submit my app on the App Store through Xcode I got this error.

<blockquote>
 A server with the specified hostname could not be found.
</blockquote>

Is this temporary error at Apple or something to do with Xcode?

Is anyone else facing this problem?

A server with the specified hostname could not be found

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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当我试图通过Xcode在app上提交我的应用程序时，我得到了这个错误。找不到具有指定主机名的服务器。这是苹果的暂时错误，还是与Xcode相关的问题？还有其他人面临这个问题吗？

问找不到具有指定主机名的服务器。
EN

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问找不到具有指定主机名的服务器。EN