blocks|key|249830|text|我通过禁用软件更新来修复它。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|249831|转到系统首选项->软件更新|249832|点击高级..。并取消“检查更新”|249833|​|249834|📷|atomic|offset|length|249835|249836|编辑|style|BOLD|249837|最近我又遇到了这个问题，但只是在打开iOS模拟器时。我不知道是什么问题，但模拟器将使用互联网约500+to，并恢复正常。或者你可以等到模拟器停止下载，或者像@Lutze解释的那样使用防火墙阻止url。|249838|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://developer.qcloudimg.com/http-save/yehe-900000/3f2f158b610ffbca49347e3bb95594fa.png|imageAlt^0|0|0|0|0|0|1|0|0|0|0|2|0|0^^$0|@$1|2|3|4|5|6|7|12|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|13|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|14|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|15|8|@]|9|@]|A|$]]|$1|H|3|I|5|J|7|16|8|@]|9|@$K|17|L|18|1|19]]|A|$]]|$1|M|3|G|5|6|7|1A|8|@]|9|@]|A|$]]|$1|N|3|O|5|6|7|1B|8|@$K|1C|L|1D|P|Q]]|9|@]|A|$]]|$1|R|3|S|5|6|7|1E|8|@]|9|@]|A|$]]|$1|T|3|-4|5|6|7|1F|8|@]|9|@]|A|$]]]|U|$V|$5|W|X|Y|A|$Z|10|11|-4]]]]

I fix it by disabling Software Updates.
Go to System Preferences -&gt; Software Update
Click on Advanced... and uncheck &quot;Check for Updates&quot;
<a href="https://i.stack.imgur.com/scgT6.png" rel="noreferrer"><img src="https://i.stack.imgur.com/scgT6.png" alt="enter image description here" /></a>
Edit
I had this issue again recently but only when i opened the iOS simulator. I don't know what's the problem but the simulator will use internet for about 500MB and back to normal.
Either you can wait until simulator stops downloading or just block the url using firewall as @Lutze explained

blocks|key|966799|text|主要问题是，任何应用程序都可以将传输委托给NSURLSession守护进程。作为一种解决办法，您可以使用像小告密者这样的应用程序防火墙来检测和阻塞流量来自的特定域。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|966800|在我的例子中，"osxapps.itunes.apple.com“占用了大量的带宽。|966801|屏蔽域的小告密者的截图|966802|entityMap|0|LINK|mutability|MUTABLE|url|https://www.obdev.at/products/littlesnitch/index-de.html|1|https://i.stack.imgur.com/WhBAr.jpg^0|1H|4|0|0|0|0|B|1|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@$A|S|B|T|1|U]]|C|$]]|$1|D|3|E|5|6|7|V|8|@]|9|@]|C|$]]|$1|F|3|G|5|6|7|W|8|@]|9|@$A|X|B|Y|1|Z]]|C|$]]|$1|H|3|-4|5|6|7|10|8|@]|9|@]|C|$]]]|I|$J|$5|K|L|M|C|$N|O]]|P|$5|K|L|M|C|$N|Q]]]]

The main problem is that any application can delegate transfers to the NSURLSession Daemon. As a workaround you could use an application firewall like <a href="https://www.obdev.at/products/littlesnitch/index-de.html" rel="nofollow noreferrer">Little snitch</a> to detect and block the specific domain where the traffic comes from.
In my case it was &quot;osxapps.itunes.apple.com&quot; that took a lot of bandwidth.
<a href="https://i.stack.imgur.com/WhBAr.jpg" rel="nofollow noreferrer">Screenshot of little snitch with the blocked domain</a>

blocks|key|967038|text|如果这个问题有几天了-我安装了11.3.1，它已经挂起了一段时间，这个问题似乎已经解决了。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|967039|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|$]]

Had this issue for a couple of days - i installed 11.3.1 which had been pending for a while and the issue seems to have sorted itself out.

blocks|key|967127|text|如果Nsurlsessiond导致高CPU和带宽使用，请执行以下操作：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|967128|1-转到Activity+，并找到trustd进程。|offset|length|style|BOLD|CODE|967129|2-从PID列复制它的PID+。|967130|3-启动终端并运行#+sudo+kill+-9+[trustd+PID]命令以结束父信任进程。|967131|Note:+Replace+[trustd+PID]+with+the+PID+you+just+copied.|code-block|syntax|javascript|967132|4-运行#+ls+-la+/var/folders/zz+%7C+grep+nsurlsessiond命令，查找特定于的“随机名称”目录。下一个命令需要这些信息。|967133|然后，运行#+sudo+rm+-fr+/var/folders/zz/[randomized+name]命令以删除nsurlsessiond临时目录。|967134|Note:+Replace+[randomized+name]+with+the+name+you+previously+found.|967135|来源|967136|6-遵循这个解决方案|967137|entityMap|0|LINK|mutability|MUTABLE|url|https://appletoolbox.com/nsurlsessiond-high-cpu-bandwidth-usage/|1|https://stackoverflow.com/a/65963919/1367344^0|0|4|9|H|6|0|3|4|B|4|0|9|R|0|0|4|19|1L|7|0|5|1B|0|0|0|2|0|0|6|4|1|0^^$0|@$1|2|3|4|5|6|7|1B|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1C|8|@$D|1D|E|1E|F|G]|$D|1F|E|1G|F|H]]|9|@]|A|$]]|$1|I|3|J|5|6|7|1H|8|@$D|1I|E|1J|F|G]|$D|1K|E|1L|F|G]]|9|@]|A|$]]|$1|K|3|L|5|6|7|1M|8|@$D|1N|E|1O|F|H]]|9|@]|A|$]]|$1|M|3|N|5|O|7|1P|8|@]|9|@]|A|$P|Q]]|$1|R|3|S|5|6|7|1Q|8|@$D|1R|E|1S|F|H]|$D|1T|E|1U|F|G]]|9|@]|A|$]]|$1|T|3|U|5|6|7|1V|8|@$D|1W|E|1X|F|H]]|9|@]|A|$]]|$1|V|3|W|5|O|7|1Y|8|@]|9|@]|A|$P|Q]]|$1|X|3|Y|5|6|7|1Z|8|@]|9|@$D|20|E|21|1|22]]|A|$]]|$1|Z|3|10|5|6|7|23|8|@]|9|@$D|24|E|25|1|26]]|A|$]]|$1|11|3|-4|5|6|7|27|8|@]|9|@]|A|$]]]|12|$13|$5|14|15|16|A|$17|18]]|19|$5|14|15|16|A|$17|1A]]]]

if Nsurlsessiond Causes High CPU and Bandwidth Usage , do this :
1 - Go to Activity Monitor, and locate the <code>trustd</code> process.
2 - Copy its PID from the PID column.
3 - Launch Terminal and run the <code># sudo kill -9 [trustd PID]</code> command to end the parent trustd process.
<pre><code>Note: Replace [trustd PID] with the PID you just copied.
</code></pre>
4 - Run the <code># ls -la /var/folders/zz | grep nsurlsessiond</code> command to find the specific “randomized name” directory. You’re going to need this information for the next command.
5 - Then, run the <code># sudo rm -fr /var/folders/zz/[randomized name]</code> command to remove the nsurlsessiond temporary directory.
<pre><code>Note: Replace [randomized name] with the name you previously found.
</code></pre>
<a href="https://appletoolbox.com/nsurlsessiond-high-cpu-bandwidth-usage/" rel="nofollow noreferrer">source</a>
<hr />
6 - follow this <a href="https://stackoverflow.com/a/65963919/1367344">solution</a>

blocks|key|249850|text|launchctl+unload+/System/Library/LaunchAgents/com.apple.nsurlsessiond.plist
sudo+launchctl+unload+/System/Library/LaunchDaemons/com.apple.nsurlsessiond.plist
sudo+launchctl+unload+/System/Library/LaunchDaemons/com.apple.nsurlstoraged.plist|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|249851|这对我有用。|unstyled|249852|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code>launchctl unload /System/Library/LaunchAgents/com.apple.nsurlsessiond.plist
sudo launchctl unload /System/Library/LaunchDaemons/com.apple.nsurlsessiond.plist
sudo launchctl unload /System/Library/LaunchDaemons/com.apple.nsurlstoraged.plist
</code></pre>
This works for me.

blocks|key|2352216|text|我使用了cloudfare+Warp应用程序，它阻止了nsurlsessiond的下载。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|CODE|entityRanges|data|2352217|它为我在使用Big操作系统的MacBookPro上工作:)|2352218|entityMap^0|4|E|4|E|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@$9|L|A|M|B|C]|$9|N|A|O|B|D]]|E|@]|F|$]]|$1|G|3|H|5|6|7|P|8|@]|E|@]|F|$]]|$1|I|3|-4|5|6|7|Q|8|@]|E|@]|F|$]]]|J|$]]

i used <code> cloudfare Warp</code> App and it stopped the nsurlsessiond from downloading .
ITS WORKING for me on MacBookPro using Big sur OS :)

<a href="https://i.stack.imgur.com/EtHd4.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/EtHd4.png" alt="enter image description here" /></a>
I am trying to find a solution to prevent <code>nsurlsessiond</code> using up all my bandwidth. It is using 2GB of data daily. I have also tried the links below. Because of this issue I am not able to complete my company work. Please can anyone help?
<ol>
<li><a href="https://forums.macrumors.com/threads/nsurlsessiond-heavy-network-usage.2027130/" rel="nofollow noreferrer">https://forums.macrumors.com/threads/nsurlsessiond-heavy-network-usage.2027130/</a></li>
<li><a href="https://forums.macrumors.com/threads/nsurlsessiond-process-going-crazy-on-catalina.2228994/" rel="nofollow noreferrer">https://forums.macrumors.com/threads/nsurlsessiond-process-going-crazy-on-catalina.2228994/</a></li>
<li><a href="https://forums.macrumors.com/threads/nsurlsessiond-downloading-data.1785204/" rel="nofollow noreferrer">https://forums.macrumors.com/threads/nsurlsessiond-downloading-data.1785204/</a></li>
<li><a href="https://discussions.apple.com/thread/6605949" rel="nofollow noreferrer">https://discussions.apple.com/thread/6605949</a></li>
</ol>
I am getting this while on click <code>nsurlsessiond</code>.
<a href="https://i.stack.imgur.com/zp54C.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/zp54C.png" alt="enter image description here" /></a>

nsurlsessiond - taking up all bandwidth

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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功能2上新100个字符功能2上新100个字符功能2上新100个字符功能2上新100个字符功能2上新100个字符功能2上新100个字符功能2上新100个字符功能2上新100个字符功能2上新100个字符。

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功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符

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​​我正试图找到一种解决方案，以防止nsurlsessiond耗尽我所有的带宽。它每天使用2GB的数据。我也尝试了下面的链接。由于这个问题，我无法完成我公司的工作。有人能帮忙吗？我在点击nsurlsessiond的时候得到了这个。​​

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