blocks|key|2792290|text|我想你把mongodb帐号密码和用户密码搞混了。您应该使用用户密码，而不是帐户密码。这就是我的案子的原因。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2792291|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 think you're confused with the mongodb account password and user password.
You should use user password, not account password.
That was the reason of my case.

blocks|key|2792265|text|我遇到了同样的问题，在我的例子中，答案很简单，只需删除<password>周围的尖括号“<”和">“即可。我一直在尝试：my_login_id:<my_password>，当它应该是my_login_id:my_password的时候。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2792266|entityMap^0|R|A|1O|P|2J|N|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]|$9|M|A|N|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|O|8|@]|D|@]|E|$]]]|G|$]]

I had the same problem, and in my case, the answer was as simple as removing the angle brackets "&lt;"and ">" around <code>&lt;password&gt;</code>. I had been trying: <code>my_login_id:&lt;my_password&gt;</code>, when it should have been <code>my_login_id:my_password</code>.

blocks|key|2580771|text|这是因为输入的密码是wrong.Because，您输入的是登录密码，而不是集群密码。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2580772|Solution+===>+step+1.在mongodb图集页面左侧导航中单击数据库访问。|2580773|步骤2.选择您的用户名，然后单击以从右侧进行编辑。|2580774|步骤3.单击以更改密码。|2580775|步骤4.单击更新用户。|2580776|在更改密码时，密码只按字母顺序排列，因为特殊字符需要编码。|2580777|📷|atomic|offset|length|2580778|​|2580779|这就是您现在可以连接的全部内容。|2580780|祝你编码愉快。|2580781|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/620fb6aeb422cac4d14b6f18949939b8.png|imageAlt^0|0|0|0|0|0|0|0|1|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|15|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|16|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|17|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|18|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|19|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|1A|8|@]|9|@]|A|$]]|$1|L|3|M|5|N|7|1B|8|@]|9|@$O|1C|P|1D|1|1E]]|A|$]]|$1|Q|3|R|5|6|7|1F|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|1G|8|@]|9|@]|A|$]]|$1|U|3|V|5|6|7|1H|8|@]|9|@]|A|$]]|$1|W|3|-4|5|6|7|1I|8|@]|9|@]|A|$]]]|X|$Y|$5|Z|10|11|A|$12|13|14|-4]]]]

This Happens because entered password is wrong.Because you are entering login password not cluster one.
Solution ===&gt;
step 1. click Database Access From left Side Navigation of mongodb atlas page.
step 2. select your username and and click to edit from right side.
step 3. click to change password.
step 4. click update user.
During change password keep password only alphabetical because special characters need encoding.
<a href="https://i.stack.imgur.com/qons1.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/qons1.png" alt="See The Image For Your Better Understanding" /></a>
that's all now you can connect.
Happy Coding.

blocks|key|72775|text|效果很好！！|type|unstyled|depth|inlineStyleRanges|entityRanges|data|72776|不要在URI中使用creds，而要使用|offset|length|style|BOLD|72777|mongoose.connect(mongodb%2Bsrv://clusterAnything.mongodb.net/test?retryWrites=true&w=majority,+{+user:+process.env.MONGO_USER,+pass:+process.env.MONGO_PASSWORD,+useNewUrlParser:+true,+useUnifiedTopology:+true+})|code-block|syntax|javascript|72778|entityMap^0|0|0|J|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@$D|Q|E|R|F|G]]|9|@]|A|$]]|$1|H|3|I|5|J|7|S|8|@]|9|@]|A|$K|L]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Works great!! 
don't use creds in the URI, use like this instead
<pre><code>mongoose.connect(mongodb+srv://clusterAnything.mongodb.net/test?retryWrites=true&amp;w=majority, { user: process.env.MONGO_USER, pass: process.env.MONGO_PASSWORD, useNewUrlParser: true, useUnifiedTopology: true })
</code></pre>

blocks|key|75298|text|要遵循的检查表：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|75299|1)确保您使用了正确的密码(+DB用户密码，而不是Mongo帐户)。|75300|2)输入密码时，请确保所有特殊字符都是URL编码的(例如：p@ssword应为p%2540ssword)。|offset|length|style|CODE|75301|3)如果你不记得你的数据库用户的密码-去数据库访问(如果你使用的是Mongo+Atlas)+->选择你的数据库用户->编辑->创建一个新的密码->+不要忘记更新点击‘更新用户’。|BOLD|75302|(!)+安全警告：请勿在代码中以纯文本形式写入密码-请按照here给出的建议进行操作。|75303|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/1054022/best-way-to-store-password-in-database^0|0|0|T|8|13|A|0|22|E|0|4|5|T|4|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|X|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|Y|8|@$F|Z|G|10|H|I]|$F|11|G|12|H|I]]|9|@]|A|$]]|$1|J|3|K|5|6|7|13|8|@$F|14|G|15|H|L]]|9|@]|A|$]]|$1|M|3|N|5|6|7|16|8|@$F|17|G|18|H|L]]|9|@$F|19|G|1A|1|1B]]|A|$]]|$1|O|3|-4|5|6|7|1C|8|@]|9|@]|A|$]]]|P|$Q|$5|R|S|T|A|$U|V]]]]

Checklist to follow:

1) Make sure you're using the correct password (the DB user password and not the Mongo account).

2) When entering your password, make sure all special characters are URL encoded (for example: <code>p@ssword</code> should be <code>p%40ssword</code>).

3) If you don't remember your password of your DB user - go to Database Access (if you're using Mongo Atlas) -> select your DB user -> edit -> create a new password -> don't forget update to click on 'Update User'.

(!) Security warning: Do not write the password in plain text inside your code - Follow the suggestions given <a href="https://stackoverflow.com/questions/1054022/best-way-to-store-password-in-database">here</a>.

blocks|key|2793092|text|在我的例子中，左字符和右字符都在那里|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2793093|像这样|2793094|<Password>|code-block|syntax|javascript|2793095|2793096|Password|2793097|现在App正在运行...|2793098|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Q|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|R|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|S|8|@]|9|@]|A|$]]|$1|J|3|K|5|F|7|T|8|@]|9|@]|A|$G|H]]|$1|L|3|M|5|6|7|U|8|@]|9|@]|A|$]]|$1|N|3|-4|5|6|7|V|8|@]|9|@]|A|$]]]|O|$]]

in my case left and right characters are there 
like this
<pre><code>&lt;Password&gt;
</code></pre>
so changed to
<pre><code>Password
</code></pre>
now App is running...

blocks|key|2580677|text|您是否要将密码写在<password>的位置？如果没有，一个好的做法是在您的操作系统上创建一个环境变量，并使用process.env.your变量调用它。例如：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2580678|const+password+=+process.env.YOURPASSWORDVARIABLE
const+db+=+'mongodb%2Bsrv://david:'%2Bpassword%2B'@cluster0-re3gq.mongodb.net/test?retryWrites=true'|code-block|syntax|javascript|2580679|更好的是，你也可以把你的整个url连接字符串放在一个env变量中：|2580680|entityMap^0|9|A|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|S|8|@]|D|@]|E|$]]|$1|M|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|N|$]]

Are you writing your password in the place of <code>&lt;password&gt;</code>? If your aren't, a good practice is to create a environment variable on your operating system and call it using process.env.[your variable]. Ex:

<pre><code>const password = process.env.YOURPASSWORDVARIABLE
const db = 'mongodb+srv://david:'+password+'@cluster0-re3gq.mongodb.net/test?retryWrites=true'
</code></pre>

Better yet, you can also put your whole url connection string inside a env variable:

blocks|key|2581208|text|我忘了在生成和复制密码后更新用户，并想知道为什么它不工作。我后来看到了更新按钮。我之前是看不见的。LOL。解决了这个问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2581209|数据库访问=>编辑用户=>生成/复制密码=>更新它！这对我很管用。|2581210|记得要确保你已经更新了它。|2581211|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|$]]

I forgot to update the user after generating and copying the password and was wondering why it wasn't working. I saw the update button later. I was not visible to me earlier. lol. Solved the problem.
Database Access =&gt; edit user =&gt; generate/copy password =&gt; update it!
It worked for me.
remember to make sure you have updated it.

blocks|key|75483|text|不仅仅是密码|type|unstyled|depth|inlineStyleRanges|entityRanges|data|75484|检查所有字段，它可能是密码、用户或数据库。如果其中任何一个拼写错误，就会出现身份验证错误。|75485|转到左侧窗格中安全下的数据库访问：|75486|📷|atomic|offset|length|75487|​|75488|以及在使用edit按钮更改密码的情况下。假设您的密码是：P@sW0rd，您可以使用数据库用户屏幕中包含的信息编译该地址：|style|CODE|75489|client+=+MongoClient("mongodb%2Bsrv://giac:P@sW0rd@cluster0.wjdtk.mongodb.net/testc?retryWrites=true&w=majority")|code-block|syntax|javascript|75490|其他答案没有说，即使您错误地拼写了数据库名称，也会出现身份验证错误。|75491|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/348cfaa69d6952d0eb6b23ca9db56717.png|imageAlt^0|0|0|0|0|1|0|0|0|5|4|S|7|0|0|0^^$0|@$1|2|3|4|5|6|7|16|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|17|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|18|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|19|8|@]|9|@$I|1A|J|1B|1|1C]]|A|$]]|$1|K|3|L|5|6|7|1D|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|1E|8|@$I|1F|J|1G|O|P]|$I|1H|J|1I|O|P]]|9|@]|A|$]]|$1|Q|3|R|5|S|7|1J|8|@]|9|@]|A|$T|U]]|$1|V|3|W|5|6|7|1K|8|@]|9|@]|A|$]]|$1|X|3|-4|5|6|7|1L|8|@]|9|@]|A|$]]]|Y|$Z|$5|10|11|12|A|$13|14|15|-4]]]]

<h1>Not only the password</h1>
Check all the fields it could be the password the user or the database. If you misspelt any of these you will have an authentication error. 
Go to the database access on the left pane under security:
<a href="https://i.stack.imgur.com/1hvQl.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/1hvQl.png" alt="enter image description here" /></a>
And in case change the password using <code>edit</code> button. Let's say your password is: <code>P@sW0rd</code>
You can compile the URL using the information contained in the Database Users screen:
<pre><code>client = MongoClient(&quot;mongodb+srv://giac:P@sW0rd@cluster0.wjdtk.mongodb.net/testc?retryWrites=true&amp;w=majority&quot;)
</code></pre>
The other answers did not say that even if you mispell the database name you have a authentication error.

blocks|key|75034|text|除了上面的答案，这个问题似乎是围绕着我输入了错误的数据库密码，因为我从Atlas菜单中读取的当前密码以及MongoDB+Atlas真正保存为我的当前密码的内容发生了扭曲。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|75035|在选择新密码时使用“复制”按钮似乎有一个"bug“。|75036|对我有帮助的是：|75037|75038|在web中打开地图集|unordered-list-item|75039|转到“数据库访问”|75040|在数据库用户|75041|上单击“编辑”|75042|为身份验证方法|75043|选择“密码”|75044|在密码字段|75045|单击“自动生成安全密码”|75046|请勿按“复制”按钮进行复制，而是通过鼠标手动选择并通过右击鼠标或键盘复制文本|75047|75048|然后:检查数据库用户列表，确保没有其他数据库用户具有与您刚生成的密码相同的密码。|75049|现在使用此连接字符串再次尝试您的用户名/密码组合(省略占位符字符'$‘和'[]'：|75050|'mongodb%2Bsrv://$username:$password@$hostlist/$database?retryWrites=true‘|75051|75052|我注意到，当我通过单击然后单击“复制”按钮自动生成新密码时，自动生成的密码被重置为旧密码。因此，我假设自动生成的新密码是正确的，但实际上它是我的旧密码，而且与另一个数据库用户的旧密码相同。我无法理解这一点，直到我点击了密码输入栏上的"Show“。|75053|也许这会有帮助！|75054|entityMap^0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|1D|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1E|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|1F|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|1G|8|@]|9|@]|A|$]]|$1|G|3|H|5|I|7|1H|8|@]|9|@]|A|$]]|$1|J|3|K|5|I|7|1I|8|@]|9|@]|A|$]]|$1|L|3|M|5|I|7|1J|8|@]|9|@]|A|$]]|$1|N|3|O|5|6|7|1K|8|@]|9|@]|A|$]]|$1|P|3|Q|5|I|7|1L|8|@]|9|@]|A|$]]|$1|R|3|S|5|6|7|1M|8|@]|9|@]|A|$]]|$1|T|3|U|5|I|7|1N|8|@]|9|@]|A|$]]|$1|V|3|W|5|I|7|1O|8|@]|9|@]|A|$]]|$1|X|3|Y|5|I|7|1P|8|@]|9|@]|A|$]]|$1|Z|3|-4|5|6|7|1Q|8|@]|9|@]|A|$]]|$1|10|3|11|5|6|7|1R|8|@]|9|@]|A|$]]|$1|12|3|13|5|6|7|1S|8|@]|9|@]|A|$]]|$1|14|3|15|5|6|7|1T|8|@]|9|@]|A|$]]|$1|16|3|-4|5|6|7|1U|8|@]|9|@]|A|$]]|$1|17|3|18|5|6|7|1V|8|@]|9|@]|A|$]]|$1|19|3|1A|5|6|7|1W|8|@]|9|@]|A|$]]|$1|1B|3|-4|5|6|7|1X|8|@]|9|@]|A|$]]]|1C|$]]

Adding to above answers, the issue seemed to revolve around a wrong Database password input for me, because of a distortion of what i read as my current password from the Atlas menu and what MongoDB Atlas really saved as my current password.
There seems to be a &quot;bug&quot; when using the &quot;Copy&quot; button when choosing a new password.
What helped me was the following:
<ul>
<li>Open Atlas in the web</li>
<li>Go to &quot;Database Access&quot;</li>
<li>Click &quot;Edit&quot; on the Database user</li>
<li>Choose &quot;Password&quot; for authentication method</li>
<li>Click &quot;Edit Password&quot;</li>
<li>Click &quot;Show&quot; in the password field</li>
<li>Click &quot;Autogenerate Secure Password&quot;</li>
<li>DO NOT press &quot;Copy&quot; button to copy, but use manual selection via mouse and copy the text via right-click of your mouse or keyboard command</li>
<li>Click &quot;Update User&quot; below</li>
</ul>
Then:
Go through the list of Database users to make sure that no other Database user has the same password you just newly generated.
Now try your Username/Password combination again using this connection string (leaving out the placeholder characters '$' and '[]':
'mongodb+srv://$[username]:$[password]@$[hostlist]/$[database]?retryWrites=true'
<hr />
I noticed that when i autogenerated a new password by clicking and then clicking the &quot;Copy&quot; button, that the autogenerated password was resetted to the old password. Therefore i assumed the new autogenerated password is correct, but in reality it was my old password, which in addition was the same as for another Database user. I could not comprehend that until i clicked &quot;Show&quot; on the password input field.
Maybe this helps!

blocks|key|2792588|text|最后，我使用了比NodeJs版本(2.2.12或更高版本)集群url更低等级的连接字符串。在此之后，请确保您必须白名单您当前的IP地址从Atlas+MongoDB。它应该像0.0.0.0/0+(包括您当前的IP地址)一样显示在Atlas+MongoDB的网络访问部分中。Connect+to+cluster+NodeJs+version+2.2.12+or+later|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|2792589|主要的问题是我将连接字符串url存储在一个常量中。所以最初，我将连接字符串值存储在单引号/双引号中，但每次我都收到身份验证失败错误，因为它无法解析来自Atlas+mongoDB的"Password“值。因此，我使用backtick+()而不是单/双引号来存储连接字符串。|2792590|示例代码中，我通过一个mongoDB应用程序连接NodeJs地图集。|2792591|const+DB_USER+=+'your+username+in+atlas+mongodb';

const+PASSWORD+=+encodeURIComponent('your+password+in+atlas+mongodb');

const+url+=+`mongodb://${DB_USER}:${PASSWORD}@cluster0-shard-00-00.3ytbz.mongodb.net:27017,cluster0-shard-00-01.3ytbz.mongodb.net:27017,cluster0-shard-00-02.3ytbz.mongodb.net:27017/sample-db?ssl=true&replicaSet=atlas-z26ao5-shard-0&authSource=admin&retryWrites=true&w=majority`;

mongoose.connect(url,
++{
++++useNewUrlParser:+true,
++++useUnifiedTopology:+true,
++++useCreateIndex:+true,
++++useFindAndModify:+true
++})
++.then(()+=>+{
++++console.log('Connected+to+database+!!');
++})
++.catch((err)=>{
++++console.log('Connection+failed+!!'%2B+err.message);
++});|code-block|syntax|javascript|2792592|entityMap|0|LINK|mutability|MUTABLE|url|https://i.stack.imgur.com/hMO6D.png^0|1K|3|3R|1D|0|0|2Z|8|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@$9|X|A|Y|B|C]]|D|@$9|Z|A|10|1|11]]|E|$]]|$1|F|3|G|5|6|7|12|8|@$9|13|A|14|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|15|8|@]|D|@]|E|$]]|$1|J|3|K|5|L|7|16|8|@]|D|@]|E|$M|N]]|$1|O|3|-4|5|6|7|17|8|@]|D|@]|E|$]]]|P|$Q|$5|R|S|T|E|$U|V]]]]

Finally, it worked for me to used that connection string with a lower grade that NodeJs versions(2.2.12 or later) cluster url. And After that make sure you have to whitelist your current IP Address from Atlas MongoDB. It should display like 0.0.0.0/0 (includes your current IP address) in Network Access section in Atlas MongoDB.
<a href="https://i.stack.imgur.com/hMO6D.png" rel="nofollow noreferrer">Connect to cluster NodeJs version 2.2.12 or later</a>
And the main issue was where I am storing that connection string url in a constant that part. So initially,I was storing that connection string value in single/double quote but every time I was getting Authentication failure error as it was unable to parse that &quot;Password&quot; value from Atlas mongoDB . So I used backtick (``)instead of single/double quote to store that connection string.
Sample code where I am connecting mongoDB Atlas through a NodeJs application.
<pre><code>const DB_USER = 'your username in atlas mongodb';

const PASSWORD = encodeURIComponent('your password in atlas mongodb');

const url = `mongodb://${DB_USER}:${PASSWORD}@cluster0-shard-00-00.3ytbz.mongodb.net:27017,cluster0-shard-00-01.3ytbz.mongodb.net:27017,cluster0-shard-00-02.3ytbz.mongodb.net:27017/sample-db?ssl=true&amp;replicaSet=atlas-z26ao5-shard-0&amp;authSource=admin&amp;retryWrites=true&amp;w=majority`;

mongoose.connect(url,
 {
 useNewUrlParser: true,
 useUnifiedTopology: true,
 useCreateIndex: true,
 useFindAndModify: true
 })
 .then(() =&gt; {
 console.log('Connected to database !!');
 })
 .catch((err)=&gt;{
 console.log('Connection failed !!'+ err.message);
 });
</code></pre>

blocks|key|2581096|text|我遇到了一个类似的问题，奇怪的是，当我在数据库访问中创建了一个新用户时，这个问题得到了解决。不过这一次，我点击了自动生成密码。这应该无关紧要，但在我的情况下，它解决了问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2581097|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 faced a similar issue, weirdly enough it got resolved when I created a new user in database access. This time though I clicked on autogenerate password. It should not matter but in my case it solved the issue.

blocks|key|2792848|text|我只是在知道我使用了正确的用户名、密码和DBname的情况下遇到了这个问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2792849|我试图更改db用户的密码以进行再次检查，但仍然不起作用。|2792850|然后，我创建了一个新用户，赋予用户admin角色，设置密码等，然后使用这个新用户和密码(相同的dbname)进行连接，它就可以工作了。|2792851|我不知道具体是什么问题，但希望它能帮助你们中的一些人节省一些时间:)|2792852|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|L|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|M|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|I|$]]

I just had this problem knowing that I was using the correct username, password and DBname.
I tried to change the password for the db user to double check, but it still didn't work.
I then instead created a new user, gave the user admin role, set the password etc, and then used that new user and password (same dbname) for the connection and it worked.
I don't know exactly what the issue was, but hoping it can help some of you save some time :)

blocks|key|2793198|text|这对我很有效|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2793199|++++mongoose.connect(
++++`mongodb%2Bsrv://${process.env.MONGO_USER}:${process.env.MONGO_PASS}@cluster0.adv0t.mongodb.net/${process.env.MONGO_DATABASE}?retryWrites=true&w=majority`,
++++{
++++++useNewUrlParser:+true,
++++++useUnifiedTopology:+true,
++++}
++);|code-block|syntax|javascript|2793200|在父目录中创建一个".env“文件(在此之前需要安装dotenv+)(如果您选择自定义位置，请在server.js/app.js中添加以下内容)。|offset|length|2793201|require('dotenv').config({+path:+'/custom/path/to/.env'+})+//uses+custom+location|2793202|否则，在启动服务器的server.js/app.js中添加以下内容。|2793203|require('dotenv').config()+//uses+default+location|2793204|在".env“文件中，像这样定义用户、密码和数据库|2793205|MONGO_USER=uSerName
MONGO_PASS=p@sSW0rd
MONGO_DATABASE=myDatabase|2793206|entityMap|0|LINK|mutability|MUTABLE|url|https://www.npmjs.com/package/dotenv^0|0|0|Q|6|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|12|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|13|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|14|8|@]|9|@$I|15|J|16|1|17]]|A|$]]|$1|K|3|L|5|D|7|18|8|@]|9|@]|A|$E|F]]|$1|M|3|N|5|6|7|19|8|@]|9|@]|A|$]]|$1|O|3|P|5|D|7|1A|8|@]|9|@]|A|$E|F]]|$1|Q|3|R|5|6|7|1B|8|@]|9|@]|A|$]]|$1|S|3|T|5|D|7|1C|8|@]|9|@]|A|$E|F]]|$1|U|3|-4|5|6|7|1D|8|@]|9|@]|A|$]]]|V|$W|$5|X|Y|Z|A|$10|11]]]]

This worked for me
<pre><code> mongoose.connect(
 `mongodb+srv://${process.env.MONGO_USER}:${process.env.MONGO_PASS}@cluster0.adv0t.mongodb.net/${process.env.MONGO_DATABASE}?retryWrites=true&amp;w=majority`,
 {
 useNewUrlParser: true,
 useUnifiedTopology: true,
 }
 );
</code></pre>
Create a &quot;.env&quot; file (you need to install <a href="https://www.npmjs.com/package/dotenv" rel="nofollow noreferrer">dotenv</a> before this ) in the parent directory(if you choose a custom location, add the following in server.js/app.js).
<pre><code>require('dotenv').config({ path: '/custom/path/to/.env' }) //uses custom location
</code></pre>
Otherwise, add this in the server.js/app.js the one that initiates server.
<pre><code>require('dotenv').config() //uses default location
</code></pre>
In the &quot;.env&quot; file, define the user, password and database like this
<pre><code>MONGO_USER=uSerName
MONGO_PASS=p@sSW0rd
MONGO_DATABASE=myDatabase
</code></pre>

blocks|key|2580838|text|我在mongoDB密码身份验证时遇到的同样问题也失败了。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2580839|“错误:错误的身份验证失败。”|2580840|按照Pawan上面的建议，我用数据库密码替换了MONGO_URI链接中的登录密码，它起作用了。一定要检查一下这一点。|2580841|如果您没有生成生成新的，或者如果之前创建了一个，则替换为新的。|2580842|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|L|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|M|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|I|$]]

The same problem i faced with mongoDB password authentication failed.

"Error: bad auth Authentication failed."

As per Pawan's suggestion given above i replaced my login password in MONGO_URI link with database password and it works. be sure to check that one also.

If you not generated the generate new one or if created earlier then replace with new one.

blocks|key|2580920|text|在我的例子中，我的密码是错误的，为了诊断错误，我已经执行了以下步骤：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2580921|我必须尝试通过命令行连接：|2580922|📷|atomic|offset|length|2580923|​|2580924|使用此命令:+mongo+"mongodb%2Bsrv://cluster0-j8ods.mongodb.net/test“--用户名：|2580925|2580926|2580927|2580928|响应再次为:2020-04-26T11:48:27.641-0500E查询js错误:错误的身份验证失败。：|2580929|然后，我将更改我的用户的密码，在我的示例中，是root用户。就这样，我被授权了|2580930|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/c3ed08e63a9380ee45be0e50df9e5bc7.png|imageAlt|1|https://ask.qcloudimg.com/http-save/yehe-900000/8ebde6540888f784df901e865fe74da6.png^0|0|0|0|1|0|0|0|0|0|0|1|1|0|0|0|0^^$0|@$1|2|3|4|5|6|7|14|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|15|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|16|8|@]|9|@$G|17|H|18|1|19]]|A|$]]|$1|I|3|J|5|6|7|1A|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|1B|8|@]|9|@]|A|$]]|$1|M|3|J|5|6|7|1C|8|@]|9|@]|A|$]]|$1|N|3|E|5|F|7|1D|8|@]|9|@$G|1E|H|1F|1|1G]]|A|$]]|$1|O|3|J|5|6|7|1H|8|@]|9|@]|A|$]]|$1|P|3|Q|5|6|7|1I|8|@]|9|@]|A|$]]|$1|R|3|S|5|6|7|1J|8|@]|9|@]|A|$]]|$1|T|3|-4|5|6|7|1K|8|@]|9|@]|A|$]]]|U|$V|$5|W|X|Y|A|$Z|10|11|-4]]|12|$5|W|X|Y|A|$Z|13|11|-4]]]]

In my case, my password was wrong, to diagnostic the error, I have been follow the next steps: 

I have to try connection by command line: 
<a href="https://i.stack.imgur.com/t2U44.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/t2U44.png" alt="enter image description here"></a>

Whit this command: mongo "mongodb+srv://cluster0-j8ods.mongodb.net/test" --username :

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

The response was again: 2020-04-26T11:48:27.641-0500 E QUERY [js] Error: bad auth Authentication failed. :

then I'm change the password for my user, in my case, root user. and thats it, I'm authorized

blocks|key|2792535|text|mongodb%2Bsrv://jehat123:<password>@jehatarmancdeniz-x2yf7.mongodb.net/question-answer?retryWrites=true&w=majority|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|2792536|删除所有密码部分|unstyled|2792537|像这样使用：|2792538|mongodb%2Bsrv://jehat123:yourpass@jehatarmancdeniz-x2yf7.mongodb.net/question-answer?retryWrites=true&w=majority|2792539|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|N|8|@]|9|@]|A|$]]|$1|G|3|H|5|F|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|P|8|@]|9|@]|A|$B|C]]|$1|K|3|-4|5|F|7|Q|8|@]|9|@]|A|$]]]|L|$]]

<pre><code>mongodb+srv://jehat123:&lt;password&gt;@jehatarmancdeniz-x2yf7.mongodb.net/question-answer?retryWrites=true&amp;w=majority
</code></pre>

Delete all of password part

Use like this:

<pre><code>mongodb+srv://jehat123:yourpass@jehatarmancdeniz-x2yf7.mongodb.net/question-answer?retryWrites=true&amp;w=majority
</code></pre>

blocks|key|2792603|text|只需去掉密码两侧的尖括号即可。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2792604|错误答案:|offset|length|style|BOLD|2792605|const+db+=+'mongodb%2Bsrv://username:<password>@cluster0-re3gq.mongodb.net/test?retryWrites=true'|CODE|2792606|正确答案:|2792607|const+db+=+'mongodb%2Bsrv://username:password@cluster0-re3gq.mongodb.net/test?retryWrites=true'|2792608|entityMap^0|0|0|5|0|0|2N|0|0|5|0|0|2L|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@$D|S|E|T|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|U|8|@$D|V|E|W|F|J]]|9|@]|A|$]]|$1|K|3|L|5|6|7|X|8|@$D|Y|E|Z|F|G]]|9|@]|A|$]]|$1|M|3|N|5|6|7|10|8|@$D|11|E|12|F|J]]|9|@]|A|$]]|$1|O|3|-4|5|6|7|13|8|@]|9|@]|A|$]]]|P|$]]

Just remove the angle brackets from both sides of your password.
Wrong Answer : 
<code>const db = 'mongodb+srv://username:&lt;password&gt;@cluster0-re3gq.mongodb.net/test?retryWrites=true'</code>
Correct Answer : 
<code>const db = 'mongodb+srv://username:password@cluster0-re3gq.mongodb.net/test?retryWrites=true'</code>

blocks|key|74916|text|您也可以通过从左侧转到database+Access，然后从右侧转到Add+new+Database+user来创建一个新的数据库用户来消除此错误。现在创建一个新的用户名和密码，单击OK。现在将这个新的用户名和密码替换到MongoUri中。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|74917|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|$]]

You can also get rid of this error by creating a new database user by going to Database Access from the left side and then go to Add New Database User from right right.
Now create a new username and password, click OK. Now replace this new username and password into the MongoUri.

blocks|key|2581337|text|在我的例子中，通过直接设置password变量解决了上面的错误。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2581338|DATABASE+=+"test"
#PASSWORD+=+os.environ.get("YOUR_PASSWORD")+#This+line+was+causing+an+error+in+code
PASSWORD+=+"YOUR_PASSWORD"++++++++++++++++++#+I+added+directly+password+variable

client+=+connect(
++++DATABASE,
++++host=f"mongodb%2Bsrv://mano:{PASSWORD}@cluster0.e2arj.mongodb.net/?retryWrites=true&w=majority",
++++alias="default",
)|code-block|syntax|javascript|2581339|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|$]]

In My case the above error got resolved by setting password variable directly.
<pre><code>DATABASE = &quot;test&quot;
#PASSWORD = os.environ.get(&quot;YOUR_PASSWORD&quot;) #This line was causing an error in code
PASSWORD = &quot;YOUR_PASSWORD&quot; # I added directly password variable

client = connect(
 DATABASE,
 host=f&quot;mongodb+srv://mano:{PASSWORD}@cluster0.e2arj.mongodb.net/?retryWrites=true&amp;w=majority&quot;,
 alias=&quot;default&quot;,
)
</code></pre>

blocks|key|75571|text|更改密码对我有效|type|unstyled|depth|inlineStyleRanges|entityRanges|data|75572|nB:不是atlas密码|75573|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|$]]

Changing password worked for me
nB: Not the atlas password

blocks|key|2581430|text|mongodb%2Bsrv://david:password@cluster0-re3gq.mongodb.net/test?retryWrites=true|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2581431|在net之后，用您在集合中创建的数据库的名称替换为用户名specified.|2581432|Replace‘’注册的密码‘|unordered-list-item|2581433|’。|2581434|2581435|2581436|entityMap^0|0|25|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|T|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|U|8|@]|D|@]|E|$]]|$1|K|3|L|5|J|7|V|8|@]|D|@]|E|$]]|$1|M|3|-4|5|6|7|W|8|@]|D|@]|E|$]]|$1|N|3|-4|5|6|7|X|8|@]|D|@]|E|$]]|$1|O|3|-4|5|6|7|Y|8|@]|D|@]|E|$]]]|P|$]]

<code>mongodb+srv://david:password@cluster0-re3gq.mongodb.net/test?retryWrites=true</code>
<ul>
<li>Replace 'password' with the password you registered for the username specified.</li>
<li>Replace 'test' after net with the name of the db you created in collections.</li>
</ul>

blocks|key|75610|text|对我来说，结果是，我不得不在MongoDB地图集页面上的密码字段中跳出。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|75611|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|$]]

For me it turned out to be, that I had to tab out of the password field on the MongoDB Atlas page. Before clicking &quot;Update User&quot;

blocks|key|73564|text|在花了将近一个小时的时间处理URI，更改权限和配置等之后，我发现我收到了这个错误消息，因为我有一个激活的VPN连接。关闭VPN后，我能够连接。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|73565|因此，如果其他方法都不适用于您，则可能是系统中的某些东西阻止了连接的成功建立，而mongodb只是使用bad+auth进行响应|offset|length|style|CODE|73566|entityMap^0|0|14|7|1F|8|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]|$D|N|E|O|F|G]]|9|@]|A|$]]|$1|H|3|-4|5|6|7|P|8|@]|9|@]|A|$]]]|I|$]]

After spending almost an hour messing with the URI, changing permissions and configurations and whatnot, I found out I was getting this error message because of a VPN connection I had active. After shutting down the VPN I was able to connect.
So if nothing else works for you, there might be something in your system preventing a connection to be successfully established and <code>mongodb</code> is just responding with <code>bad auth</code>

blocks|key|2581657|text|​|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2581658|📷|atomic|offset|length|2581659|2581660|只需转到"MongoDB用户选项卡“，您将在其中找到用户列表。单击编辑，您可以在其中重置密码。有时重置密码可以解决此问题。|2581661|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/76edc029987cbf230161251b4ee5d3e1.png|imageAlt^0|0|0|1|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@$E|U|F|V|1|W]]|A|$]]|$1|G|3|4|5|6|7|X|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|Y|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|K|$L|$5|M|N|O|A|$P|Q|R|-4]]]]

<a href="https://i.stack.imgur.com/KOazr.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/KOazr.png" alt="enter image description here" /></a>
Just go to the &quot;MongoDB Users tab&quot; where you will find the user list. Click on edit where you can reset the password. Sometimes resetting the password can resolve the issue.

blocks|key|2793312|text|如果你有这个问题，并且通过官方的mongo训练来学习mongo，那么使用m001-mongodb-basics作为你的数据库的密码。正确的数据库名称是Sandbox+(如果您遵循所有步骤)|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2793313|entityMap^0|10|J|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|$]]

if you having this issue and learning mongo by official mongo trainings use <code>m001-mongodb-basics</code> as password for your db. And the correct db name is Sandbox (if you followed all steps)

I'm trying to connect to my mongoDB server via the connection string given to me by mongo:
<pre class="lang-js prettyprint-override"><code>&quot;mongodb+srv://david:password@cluster0-re3gq.mongodb.net/test?retryWrites=true&quot;
</code></pre>
In my code I am calling the connection through mongoose like this (obviously putting in my password):
<pre><code>const mongoose = require('mongoose');
const db = 'mongodb+srv://david:&lt;password&gt;@cluster0-re3gq.mongodb.net/test?retryWrites=true'
mongoose
 .connect(db, { 
 useNewUrlParser: true,
 useCreateIndex: true
 })
 .then(() =&gt; console.log('MongoDB connected...'))
 .catch(err =&gt; console.log(err));
</code></pre>
When I run the code I am getting the following error
<blockquote>
&quot;MongoError: bad auth Authentication failed.&quot;
</blockquote>
Any ideas of what that could mean?

Error Message: MongoError: bad auth Authentication failed through URI string

身份验证

数据库

服务器

MongoDB

我正在尝试通过mongo给我的连接字符串连接到我的mongoDB服务器："mongodb+srv://david:password@cluster0-re3gq.mongodb.net/test?retryWrites=true"在我的代码中，我像这样通过mongoose调用连接(显然输入了我的密码)：const mongoose = require('mongoose');const db = 

问错误消息: MongoError:通过URI字符串验证身份验证失败
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回答 26

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问错误消息: MongoError:通过URI字符串验证身份验证失败EN

回答 26

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问错误消息: MongoError:通过URI字符串验证身份验证失败
EN