blocks|key|395156|text|你可以考虑把你的版本升级到19582.1000，这是我的工作。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|395157|见本期。|offset|length|395158|​|395159|📷|atomic|395160|395161|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/microsoft/WSL/issues/4860|1|IMAGE|IMMUTABLE|imageUrl|https://developer.qcloudimg.com/http-save/yehe-900000/755e7faa39afbc87d81a56b56ed2f740.jpg|imageAlt^0|0|1|2|0|0|0|0|1|1|0|0^^$0|@$1|2|3|4|5|6|7|Z|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|10|8|@]|9|@$D|11|E|12|1|13]]|A|$]]|$1|F|3|G|5|6|7|14|8|@]|9|@]|A|$]]|$1|H|3|I|5|J|7|15|8|@]|9|@$D|16|E|17|1|18]]|A|$]]|$1|K|3|G|5|6|7|19|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|1A|8|@]|9|@]|A|$]]]|M|$N|$5|O|P|Q|A|$R|S]]|T|$5|U|P|V|A|$W|X|Y|-4]]]]

you can consider upgrading your version to 19582.1000 , it's work for me.

See <a href="https://github.com/microsoft/WSL/issues/4860" rel="nofollow noreferrer">this issue</a>.

<a href="https://i.stack.imgur.com/sp1Ox.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/sp1Ox.jpg" alt="enter image description here"></a>

blocks|key|395191|text|如果这对其他有此问题的人有帮助，那么对我来说，我的子系统突然(和“自己的”)在docker的资源>+WSL集成设置中被勾掉了。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|395192|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|$]]

If it helps anyone else that is having this issue, for me it turned out that my subsystem was suddenly (and "on its own") ticked off in docker's RESOURCES > WSL INTEGRATION settings.

blocks|key|1237893|text|我知道，对于目前的问题来说，这可能已经过时了，但这将为我们节省宝贵的时间，特别是当Windows本月(2020年5月)开始生产时。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1237894|操作系统版本：Windows10Education(与企业和Pro的超级集相同)。|offset|length|style|BOLD|1237895|版本：2004|1237896|Build+(版本OS)：19041.264|1237897|Other：Windows特性体验包120.2202.130.0。|1237898|二次~~|1237899|Shell：WSL终端|1237900|首先，我之前安装了WSL+v1，然后执行了升级到WSL+v2的过程，此错误显示：“：无法连接到tcp://localhost:2375的Docker守护进程。端口守护进程正在运行吗？”|1237901|第二次，为了解决这个问题，我遵循了这里的说明：链接，它成功了。|1237902|第三次，经过一些测试后，我认为升级中缺少的更改是从shell的开始脚本中删除了DOCKER_HOST变量。|1237903|摘要：在我的例子中，永久修复的过程应该遵循步骤|1237904|1.测试(如果是您的情况)，取消设置DOCKER_HOST变量(见下图)。|1237905|2.如果在前面的步骤中错误消失，那么就需要修复删除DOCKER_HOST脚本中DOCKER_HOST变量设置的更改(在我的示例中是$HOME/..bashrc)。|1237906|另一种做法是，对此作出评论：|1237907|#export+DOCKER_HOST=tcp://localhost:2375|CODE|1237908|#export+DOCKER_BUILDKIT=1|1237909|注:还包括DOCKER_BUILDKIT。|1237910|3.关闭并打开终端。|1237911|步骤1中的其他测试：|1237912|📷|atomic|1237913|祝你好运！！|1237914|entityMap|0|LINK|mutability|MUTABLE|url|https://codesthq.com/painless-way-to-wsl-2-with-docker/|1|IMAGE|IMMUTABLE|imageUrl|https://developer.qcloudimg.com/http-save/yehe-900000/008f75a10de3e9b22629d7b912bdbfac.png|imageAlt^0|0|0|6|0|0|2|0|0|C|0|0|5|0|0|0|5|0|0|2|0|0|3|N|2|0|0|0|3|0|0|3|L|2|0|0|2|0|0|2|0|0|0|14|0|0|P|0|0|0|2|0|0|9|0|0|1|1|0|0|6|0^^$0|@$1|2|3|4|5|6|7|1Z|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|20|8|@$D|21|E|22|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|23|8|@$D|24|E|25|F|G]]|9|@]|A|$]]|$1|J|3|K|5|6|7|26|8|@$D|27|E|28|F|G]]|9|@]|A|$]]|$1|L|3|M|5|6|7|29|8|@$D|2A|E|2B|F|G]]|9|@]|A|$]]|$1|N|3|O|5|6|7|2C|8|@]|9|@]|A|$]]|$1|P|3|Q|5|6|7|2D|8|@$D|2E|E|2F|F|G]]|9|@]|A|$]]|$1|R|3|S|5|6|7|2G|8|@$D|2H|E|2I|F|G]]|9|@]|A|$]]|$1|T|3|U|5|6|7|2J|8|@$D|2K|E|2L|F|G]]|9|@$D|2M|E|2N|1|2O]]|A|$]]|$1|V|3|W|5|6|7|2P|8|@$D|2Q|E|2R|F|G]]|9|@]|A|$]]|$1|X|3|Y|5|6|7|2S|8|@$D|2T|E|2U|F|G]|$D|2V|E|2W|F|G]]|9|@]|A|$]]|$1|Z|3|10|5|6|7|2X|8|@$D|2Y|E|2Z|F|G]]|9|@]|A|$]]|$1|11|3|12|5|6|7|30|8|@$D|31|E|32|F|G]]|9|@]|A|$]]|$1|13|3|14|5|6|7|33|8|@]|9|@]|A|$]]|$1|15|3|16|5|6|7|34|8|@$D|35|E|36|F|17]]|9|@]|A|$]]|$1|18|3|19|5|6|7|37|8|@$D|38|E|39|F|17]]|9|@]|A|$]]|$1|1A|3|1B|5|6|7|3A|8|@]|9|@]|A|$]]|$1|1C|3|1D|5|6|7|3B|8|@$D|3C|E|3D|F|G]]|9|@]|A|$]]|$1|1E|3|1F|5|6|7|3E|8|@$D|3F|E|3G|F|G]]|9|@]|A|$]]|$1|1G|3|1H|5|1I|7|3H|8|@]|9|@$D|3I|E|3J|1|3K]]|A|$]]|$1|1J|3|1K|5|6|7|3L|8|@$D|3M|E|3N|F|G]]|9|@]|A|$]]|$1|1L|3|-4|5|6|7|3O|8|@]|9|@]|A|$]]]|1M|$1N|$5|1O|1P|1Q|A|$1R|1S]]|1T|$5|1U|1P|1V|A|$1W|1X|1Y|-4]]]]

I know this may be outdated for present question, but this should save us precious time, especially when Windows 20H1=2004 is going to Production this month (May 2020).

&nbsp;&nbsp;Operating System Version: Windows 10 Education (Same as Enterprise and a superset of Pro). 
&nbsp;&nbsp;Version: 2004 
&nbsp;&nbsp;Build (Version OS): 19041.264 
&nbsp;&nbsp;Others: Windows Feature Experience Pack 120.2202.130.0. 
&nbsp;&nbsp;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 
&nbsp;&nbsp;Shell: WSL Terminal 

First, i have installed WSL v1 previously, then executed procedure for upgrade to WSL v2, and this error shows up: "ERROR: Cannot connect to the Docker daemon at tcp://localhost:2375. Is the docker daemon running?".

Second, to fix that, I followed instructions stated here: <a href="https://codesthq.com/painless-way-to-wsl-2-with-docker/" rel="noreferrer">Link</a>, and it worked.

Third, after some tests i think the missing change in the upgrade, was remove DOCKER_HOST variable from shell's start script.

SUMMARY: In my case, the procedure for a permanent fix should be following STEPs: 

&nbsp;&nbsp;1. Test if it's your case unsetting DOCKER_HOST variable (See image below). 
 
&nbsp;&nbsp;2. If the error disappears with previous step, then time to fix changes removing setting of DOCKER_HOST variable in the shell's start script (In my case was $HOME/.bashrc). 
&nbsp;&nbsp;&nbsp;&nbsp;Commented this out: 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<code>#export DOCKER_HOST=tcp://localhost:2375</code> 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<code>#export DOCKER_BUILDKIT=1</code> 

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NOTE: Also include DOCKER_BUILDKIT. 
 
&nbsp;&nbsp;3. Close and open the Terminal. 

&nbsp;&nbsp;Test in Step 1:
<a href="https://i.stack.imgur.com/dilNA.png" rel="noreferrer"><img src="https://i.stack.imgur.com/dilNA.png" alt="enter image description here"></a>
 
 
Good luck!!

blocks|key|1237938|text|问题:无法连接到tcp://127.0.0.1:2375上的Docker守护进程|type|blockquote|depth|inlineStyleRanges|entityRanges|data|1237939|Powershell|unstyled|1237940|wsl+-l+-v+++#+ALL+DISPLAY+"2"|code-block|syntax|javascript|1237941|Linux|1237942|unset+DOCKER_HOST

/etc/init.d/docker+restart|1237943|重新启动码头|1237944|windows+docker+restart
windows+firewall+off|1237945|Linux坞进程|1237946|docker+ps|1237947|entityMap^0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|X|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|Y|8|@]|9|@]|A|$]]|$1|E|3|F|5|G|7|Z|8|@]|9|@]|A|$H|I]]|$1|J|3|K|5|D|7|10|8|@]|9|@]|A|$]]|$1|L|3|M|5|G|7|11|8|@]|9|@]|A|$H|I]]|$1|N|3|O|5|D|7|12|8|@]|9|@]|A|$]]|$1|P|3|Q|5|G|7|13|8|@]|9|@]|A|$H|I]]|$1|R|3|S|5|D|7|14|8|@]|9|@]|A|$]]|$1|T|3|U|5|G|7|15|8|@]|9|@]|A|$H|I]]|$1|V|3|-4|5|D|7|16|8|@]|9|@]|A|$]]]|W|$]]

<blockquote>
ISSUE: Cannot connect to the Docker daemon at tcp://127.0.0.1:2375
</blockquote>
<h3>Powershell</h3>
<pre><code>wsl -l -v # ALL DISPLAY &quot;2&quot;
</code></pre>
<h3>Linux</h3>
<pre><code>unset DOCKER_HOST

/etc/init.d/docker restart
</code></pre>
<h3>Restart Docker</h3>
<pre><code>windows docker restart
windows firewall off
</code></pre>
<h3>Linux docker processes</h3>
<pre><code>docker ps
</code></pre>

blocks|key|1025735|text|我发现我的问题是由于我的windows版本1909和WSL+2错误阅读说明，并在CMD上使用了以下命令：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1025736|wsl.exe+-l+-v
wsl.exe+--set-version+${distro-name}+${wsl+version}|code-block|syntax|javascript|1025737|示例：|1025738|C:\Users\xxxxx>wsl.exe+-l+-v
++NAME+++++++++++++++++++STATE+++++++++++VERSION
*+Ubuntu-18.04+++++++++++Running+++++++++1
++docker-desktop-data++++Running+++++++++2
++docker-desktop+++++++++Running+++++++++2

C:\Users\xxxxx>wsl.exe+--set-version+Ubuntu-18.04+2
Conversion+in+progress,+this+may+take+a+few+minutes...
For+information+on+key+differences+with+WSL+2+please+visit+https://aka.ms/wsl2|1025739|就这样|1025740|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

I have found my issue was due to mis-reading instructions., fixed on my windows version 1909 and WSL 2 with the following commands on CMD:
<pre><code>wsl.exe -l -v
wsl.exe --set-version ${distro-name} ${wsl version}
</code></pre>
example:
<pre><code>C:\Users\xxxxx&gt;wsl.exe -l -v
 NAME STATE VERSION
* Ubuntu-18.04 Running 1
 docker-desktop-data Running 2
 docker-desktop Running 2

C:\Users\xxxxx&gt;wsl.exe --set-version Ubuntu-18.04 2
Conversion in progress, this may take a few minutes...
For information on key differences with WSL 2 please visit https://aka.ms/wsl2
</code></pre>
That's it

blocks|key|1025777|text|不管它有什么价值(这是一条老线)。也许其他人还在拼命地想解决这个难题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1025778|在我的案子中，我刚刚在解决方案上绊倒了。我正在运行以下命令|1025779|docker桌面版本3.3.3|unordered-list-item|1025780|wsl+2|1025781|Fedora+33一次又一次地遇到这个问题，“无法连接到unix://var/run/docker.sock上的Docker守护进程”。重新安装，重新启动，低音。|1025782|我的最终错误是/var/run/docker.sock上的访问权限，并且我在我的个人用户srw-rw-5月7日5月7日-+10:29+/var/run/docker.sock+-下运行wsl。|1025783|因此，如果我以root身份运行()或将自己放入组"+docker“(+docker+$USER)，那么我就没事了。请看这里，https://docs.docker.com/engine/install/linux-postinstall/|offset|length|1025784|entityMap|0|LINK|mutability|MUTABLE|url|https://docs.docker.com/engine/install/linux-postinstall/^0|0|0|0|0|0|0|1Q|1L|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Z|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|10|8|@]|9|@]|A|$]]|$1|G|3|H|5|F|7|11|8|@]|9|@]|A|$]]|$1|I|3|J|5|F|7|12|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|13|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|14|8|@]|9|@$O|15|P|16|1|17]]|A|$]]|$1|Q|3|-4|5|6|7|18|8|@]|9|@]|A|$]]]|R|$S|$5|T|U|V|A|$W|X]]]]

For whatever it's worth (this is an old thread). Maybe someone else is still desperately trying to solve this puzzle.
I have just stumbled over the solution in my case.
I am running the following
<ul>
<li>docker desktop version 3.3.3</li>
<li>wsl 2</li>
<li>Fedora 33
Over and over again I ran into this issue &quot;Cannot connect to the Docker daemon at unix:///var/run/docker.sock&quot;. Reinstalled, restarted, blablabla.</li>
</ul>
My ultimate error were access rights on /var/run/docker.sock, and I am running wsl under my personal user
srw-rw---- 1 root docker 0 May 7 10:29 /var/run/docker.sock
So if I run as root (sudo docker info) or I put myself into group &quot;docker&quot; (sudo usermod -aG docker $USER) I'm all well. Please look here <a href="https://docs.docker.com/engine/install/linux-postinstall/" rel="nofollow noreferrer">https://docs.docker.com/engine/install/linux-postinstall/</a>

blocks|key|1238032|text|在Desktop应用程序上，我必须手动启用我的发行版集成|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1238033|Settings+>+Resources+>+WSL+Integration|code-block|syntax|javascript|1238034|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|$]]

On the Docker Desktop app I had to manually enable my distro integration under
<pre><code>Settings &gt; Resources &gt; WSL Integration
</code></pre>

blocks|key|395419|text|我已经安装了Docker，按建议，以便与WSL+2一起使用它，这确实会为您启动停靠守护进程。但我不需要它提供的所有花哨的功能，如此删除它，并高兴地看到大约4GB释放和没有额外的图标在系统托盘。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|395420|现在，如果我需要运行docker命令，我只是从以下几个方面开始：|395421|sudo+dockerd+&|code-block|syntax|javascript|395422|这样，我就可以让它在同一个shell的背景上运行。请注意，在本例中，我设置了没有密码的sudo。如果需要密码，我可以执行sudo+dockerd并打开另一个终端选项卡。|style|CODE|395423|虽然这是一种快速的临时解决方案，但我看到它会导致网络问题，所以我不推荐它，而更喜欢使用光VM代替。|395424|entityMap|0|LINK|mutability|MUTABLE|url|https://learn.microsoft.com/en-us/windows/wsl/tutorials/wsl-containers|1|https://learn.microsoft.com/en-us/windows/wsl/install-manual#step-4---download-the-linux-kernel-update-package|2|https://unix.stackexchange.com/a/672321/212177|3|https://superuser.com/a/1681105/668905^0|D|3|0|K|5|1|0|0|0|17|4|1O|C|0|O|4|2|17|5|3|0^^$0|@$1|2|3|4|5|6|7|14|8|@]|9|@$A|15|B|16|1|17]|$A|18|B|19|1|1A]]|C|$]]|$1|D|3|E|5|6|7|1B|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|1C|8|@]|9|@]|C|$I|J]]|$1|K|3|L|5|6|7|1D|8|@$A|1E|B|1F|M|N]|$A|1G|B|1H|M|N]]|9|@]|C|$]]|$1|O|3|P|5|6|7|1I|8|@]|9|@$A|1J|B|1K|1|1L]|$A|1M|B|1N|1|1O]]|C|$]]|$1|Q|3|-4|5|6|7|1P|8|@]|9|@]|C|$]]]|R|$S|$5|T|U|V|C|$W|X]]|Y|$5|T|U|V|C|$W|Z]]|10|$5|T|U|V|C|$W|11]]|12|$5|T|U|V|C|$W|13]]]]

I had installed Docker for Windows, <a href="https://learn.microsoft.com/en-us/windows/wsl/tutorials/wsl-containers" rel="noreferrer">as recommended</a>, to use it with <a href="https://learn.microsoft.com/en-us/windows/wsl/install-manual#step-4---download-the-linux-kernel-update-package" rel="noreferrer">WSL 2</a> and that does indeed start the docker daemon for you. But I don't need all the fancy features it offers so removed it and was pleased to see about 4GB freed and no extra icon in the system tray.
Now if I need to run docker commands I just begin with:
<pre><code>sudo dockerd &amp;
</code></pre>
This way I can have it running on the background on the same shell. Note that in this example I have setup <code>sudo</code> without password. If a password is required, I can do <code>sudo dockerd</code> and open another terminal tab.
Although this works as a quick temporary solution I've seen it cause <a href="https://unix.stackexchange.com/a/672321/212177">network issues</a> so I would not recommend it, and prefer using a <a href="https://superuser.com/a/1681105/668905">light VM instead</a>.

blocks|key|395468|text|我尝试过很多事情，也尝试过对我有用的东西，从来没有人提过要尝试：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|395469|(来自Windows+Powershell)|395470|wsl+--set-default+<my-distro>|code-block|syntax|javascript|395471|然后，我可以在不更改DOCKER_HOST+var的情况下连接到docker。|offset|length|style|CODE|395472|entityMap^0|0|0|0|A|B|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|T|8|@$K|U|L|V|M|N]]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

I've tried soooo many things, and the stuff that worked for me, and no one ever mentioned to try:
(from Windows Powershell)
<pre><code>wsl --set-default &lt;my-distro&gt;
</code></pre>
then and there, I could connect to docker without changing the <code>DOCKER_HOST</code> var.

blocks|key|1025882|text|还有一个非常基本的问题：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1025883|确保在BIOS.中启用虚拟化|unordered-list-item|offset|length|style|BOLD|1025884|请从选择其他Windows功能中启用虚拟机平台Windows功能。|1025885|现在我的主板已经很老了，BIOS不支持虚拟化.|1025886|因此，没有任何解决办法对我有效。|1025887|WSL版本1或2将自动来自Windows。|1025888|entityMap^0|0|0|8|0|0|0|N|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@$E|U|F|V|G|H]]|9|@]|A|$]]|$1|I|3|J|5|D|7|W|8|@]|9|@]|A|$]]|$1|K|3|L|5|D|7|X|8|@$E|Y|F|Z|G|H]]|9|@]|A|$]]|$1|M|3|N|5|D|7|10|8|@]|9|@]|A|$]]|$1|O|3|P|5|D|7|11|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|R|$]]

There is another very basic catch:
<ul>
<li>Ensure virtualization is enabled in the BIOS.</li>
<li>Please enable the Virtual Machine Platform Windows feature from the selection of additional Windows Features.</li>
<li>Now my motherboard is being very old, the BIOS does not support
Enabling Virtualization.</li>
<li>Hence no solution will work for me.</li>
<li>WSL Version 1 or 2 will come from Windows Update automatically.</li>
</ul>

blocks|key|1025932|text|几个小时后，我的码头工人使用以下方法工作。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1025933|转到tcp://localhost上的停靠桌面-->设置-->通用->禁用公开守护进程:2375而不使用|ordered-list-item|offset|length|style|BOLD|1025934|转到设置->参考资料->+WSL集成->取消选中启用与我的默认WSL发行版的集成，并关闭与发行版的集成。|1025935|重新启动码头桌面|1025936|现在在WSL，
未设置DOCKER_HOST|1025937|现在试试，
码头工人ps|1025938|entityMap^0|0|J|X|0|2|1A|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@$E|U|F|V|G|H]]|9|@]|A|$]]|$1|I|3|J|5|D|7|W|8|@$E|X|F|Y|G|H]]|9|@]|A|$]]|$1|K|3|L|5|D|7|Z|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|10|8|@]|9|@]|A|$]]|$1|O|3|P|5|D|7|11|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|R|$]]

After hours, my docker worked using following method.
<ol>
<li>Go to docker desktop --&gt; Setting --&gt;General --&gt; Disable Expose daemon on tcp://localhost:2375 without TLS
</li>
<li>Go to Settings --&gt; Resources --&gt; WSL integration --&gt; uncheck Enable integration with my default WSL distro and turn off integration with distro
</li>
<li>Restart Docker desktop
</li>
<li>Now in WSL,
<pre><code>unset DOCKER_HOST
</code></pre>
</li>
<li>Now try,
<pre><code>docker ps
</code></pre>
</li>
</ol>

blocks|key|1238285|text|公认的答案基本上是正确的。但是，我希望在使用WSL2+%2BDesktop时指定：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1238286|您必须取消DOCKER_HOST，这是以前在WSL1+中需要的|unordered-list-item|1238287|在~/.bashrc和WSL中都定义了in。|offset|length|style|CODE|1238288|两者都删除。还通过控制面板删除Windows+env变量。|1238289|请与env+%7C+grep+-i+docker联系，以确保它已经消失。|1238290|1238291|还必须在Desktop+中设置正确的设置|1238292|取消检查Export+daemon+on+tcp://localhost:2375+without+TLS|1238293|检查Use+the+WSL2+based+engine|1238294|资源->+WSL集成->检查Enable+integration+with+my+default+WSL+distro|1238295|1238296|现在，您可以执行一个简单的docker+info来检查是否在WSL和Windows+(Powershell)中运行相同的服务器版本。|1238297|entityMap^0|0|1|1|9|1|1|2|K|1|0|1|4|1D|1|2|P|1|E|19|1|0|D|B|0^^$0|@$1|2|3|4|5|6|7|12|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|13|8|@]|9|@]|A|$]]|$1|E|3|F|5|D|7|14|8|@$G|15|H|16|I|J]]|9|@]|A|$]]|$1|K|3|L|5|D|7|17|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|18|8|@$G|19|H|1A|I|J]]|9|@]|A|$]]|$1|O|3|-4|5|6|7|1B|8|@]|9|@]|A|$]]|$1|P|3|Q|5|D|7|1C|8|@]|9|@]|A|$]]|$1|R|3|S|5|D|7|1D|8|@$G|1E|H|1F|I|J]]|9|@]|A|$]]|$1|T|3|U|5|D|7|1G|8|@$G|1H|H|1I|I|J]]|9|@]|A|$]]|$1|V|3|W|5|D|7|1J|8|@$G|1K|H|1L|I|J]]|9|@]|A|$]]|$1|X|3|-4|5|6|7|1M|8|@]|9|@]|A|$]]|$1|Y|3|Z|5|6|7|1N|8|@$G|1O|H|1P|I|J]]|9|@]|A|$]]|$1|10|3|-4|5|6|7|1Q|8|@]|9|@]|A|$]]]|11|$]]

The accepted answer is mostly correct. However, I wanted to specify that when using WSL2 + Docker Desktop:
<ul>
<li>You must unset DOCKER_HOST which was previously needed in WSL1
<ul>
<li>Mine was defined in <code>~/.bashrc</code> in both Windows and WSL.</li>
<li>Delete in both. Also delete in Windows env variables via Control Panel.</li>
<li>Check with <code>env | grep -i docker</code> to make sure it's gone.</li>
</ul>
</li>
<li>You must also set the correct settings in Docker Desktop
<ul>
<li>Uncheck <code>Export daemon on tcp://localhost:2375 without TLS</code></li>
<li>Check <code>Use the WSL2 based engine</code></li>
<li>Resources -&gt; WSL Integration -&gt; Check <code>Enable integration with my default WSL distro</code></li>
</ul>
</li>
</ul>
Now, you can do a simple <code>docker info</code> to check if you're running the same server version in WSL and in Windows (Powershell).

blocks|key|1238374|text|1.打开windows+docker桌面-->设置-->常规-->禁用tcp://localhost上的公开守护进程:2375而不使用TLS|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1238375|​|1238376|📷|atomic|offset|length|1238377|1238378|2.然后转到Settings+->+Resources+->+WSL集成->取消选中启用与我的默认WSL发行版的集成，并关闭与发行版的集成|1238379|1238380|1238381|1238382|3.单击“应用”并重新启动|1238383|4.然后去ubuntu试船坞|1238384|如果docker+ps不能工作，请继续运行以下命令unset+DOCKER_HOST以禁用DOCKER_HOST|style|CODE|1238385|1238386|1238387|1238388|今天我刚刚成功地试了一下|1238389|祝你好运|1238390|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://developer.qcloudimg.com/http-save/yehe-900000/16c9e26ad2168abd539624c7f280dc46.png|imageAlt|1|https://developer.qcloudimg.com/http-save/yehe-900000/e6b28ba030e9bb0b9c04788305d88278.png|2|https://developer.qcloudimg.com/http-save/yehe-900000/0f31269d735fec5d449165dbce4d0e7b.png^0|0|0|0|1|0|0|0|0|0|0|1|1|0|0|0|0|2|9|P|H|0|0|0|1|2|0|0|0|0^^$0|@$1|2|3|4|5|6|7|1G|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1H|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|1I|8|@]|9|@$G|1J|H|1K|1|1L]]|A|$]]|$1|I|3|C|5|6|7|1M|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|1N|8|@]|9|@]|A|$]]|$1|L|3|C|5|6|7|1O|8|@]|9|@]|A|$]]|$1|M|3|E|5|F|7|1P|8|@]|9|@$G|1Q|H|1R|1|1S]]|A|$]]|$1|N|3|C|5|6|7|1T|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|1U|8|@]|9|@]|A|$]]|$1|Q|3|R|5|6|7|1V|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|1W|8|@$G|1X|H|1Y|U|V]|$G|1Z|H|20|U|V]]|9|@]|A|$]]|$1|W|3|C|5|6|7|21|8|@]|9|@]|A|$]]|$1|X|3|E|5|F|7|22|8|@]|9|@$G|23|H|24|1|25]]|A|$]]|$1|Y|3|C|5|6|7|26|8|@]|9|@]|A|$]]|$1|Z|3|10|5|6|7|27|8|@]|9|@]|A|$]]|$1|11|3|12|5|6|7|28|8|@]|9|@]|A|$]]|$1|13|3|-4|5|6|7|29|8|@]|9|@]|A|$]]]|14|$15|$5|16|17|18|A|$19|1A|1B|-4]]|1C|$5|16|17|18|A|$19|1D|1B|-4]]|1E|$5|16|17|18|A|$19|1F|1B|-4]]]]

1.open windows docker desktop --&gt; Setting --&gt;General --&gt; Disable Expose daemon on tcp://localhost:2375 without TLS
<img src="https://i.stack.imgur.com/SJpM2.png" alt="img1" />
2.and then Go to Settings --&gt; Resources --&gt; WSL integration --&gt; uncheck Enable integration with my default WSL distro and turn off integration with distro
<img src="https://i.stack.imgur.com/zmr24.png" alt="img2" />
3.click apply and restart
4.then go to ubuntu
try docker ps 
<code>docker ps</code>
if it does not work, continue to run the following command
<code>unset DOCKER_HOST</code> to disable DOCKER_HOST
<img src="https://i.stack.imgur.com/GElWG.png" alt="img3" />
Today I just tried it successfully
good luck to you

blocks|key|395659|text|我也遇到了同样的问题，解决方案是将我的Ubuntu设置为默认的wsl发行版:+wsl+-+set+-默认Ubuntu。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|395660|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 had the same problem, the solution for me was to set my Ubuntu as the default wsl distribution: wsl --set-default Ubuntu

here is my setup:

<ul>
<li><code>Windows 10 PRO - build 19041.153</code> - insider program - slow ring</li>
<li><code>Ubuntu 18.04LTS</code> subsystem in WSL2 mode</li>
<li><code>Docker for desktop 2.2.0.4</code> - enabled WSL2 integration with my Ubuntu subsystem</li>
</ul>

I was currently forced to use Windows for development, so I became microsoft insider member and installed ubuntu with WSL2 mode. Docker desktop supports intergration for WSL2, so I tried it... For a week it worked flawlessly. Today after PC restart, I can't get docker running again. Ubuntu can see injected binaries from Docker desktop, but it can't connect to windows hosted docker daemon anymore.

When I call in subsys terminal <code>docker info</code> it returns 

<pre><code>$ docker info
Client:
 Debug Mode: false

Server:
ERROR: Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?
errors pretty printing info
</code></pre>

or with <code>docker-compose up</code>

<pre><code>ERROR: Couldn't connect to Docker daemon at http+docker://localhost - is it running?

If it's at a non-standard location, specify the URL with the DOCKER_HOST environment variable.
</code></pre>

What I've tried already:

<ul>
<li>expose daemon without TLS with envs like <code>DOCKER_HOST=localhost:2375</code>, <code>DOCKER_HOST=tcp://localhost:2375</code>, <code>DOCKER_HOST=127.0.0.1:2375</code>, <code>DOCKER_HOST=tcp://127.0.0.1:2375</code> => same result</li>
<li>uninstall Docker desktop and install previous version</li>
<li>turn off win firewall</li>
</ul>

I really, really need this to work. Thanks for any ideas. Weirdest thing is it worked yesterday and I didn't make any changes in system from then...

WSL2 Cannot connect to the Docker daemon

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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这是我的设置：Windows 10 PRO - build 19041.153 -内部程序-慢速环Ubuntu 18.04LTS子系统在WSL2模式下支持Docker for desktop 2.2.0.4的WSL2与我的Ubuntu子系统的集成目前我被迫使用Windows进行开发，因此我成为微软内部成员，并以WSL2...

问WSL2无法连接到Docker守护进程
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