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                        <h1 class="page-title"><a href="/show-308192714.html" title="Microsoft SQL Server, 错误：4064的解决方法 （转载）">Microsoft SQL Server, 错误：4064的解决方法 （转载）</a></h1>
            
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                <time class="post-date" datetime="2022-12-23">2022-12-23</time>
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<h3>SQL SERVER – Fix : Error: 4064 – Cannot open user default database. Login failed. Login failed for user</h3>
<p class="post-info">November 4, 2008 by <a title="Posts by pinaldave" href="http://blog.sqlauthority.com/author/pinaldave/" rel="nofollow" target="_blank">pinaldave</a></p>
</div>
<p>I have received following question nearly 10 times in last week though emails. Many users have received following error while connecting to the database. This error happens when database is dropped for which is default for some of the database user. When user try to login and their default database is dropped following error shows up.</p>
<p><em><strong>Cannot open user default database. Login failed.<br>
Login failed for user ‘UserName’. (Microsoft SQL Server, Error: 4064)</strong>
</em>
</p>
<p><img class="alignnone" src="/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNEb3ZMM2QzZHk1d2FXNWhiR1JoZG1VdVkyOXRMMkpwYldjdlpYSnliM0kwTURZMExtcHdadz09" alt="Microsoft SQL Server, 错误：4064的解决方法 （转载）" title="Microsoft SQL Server, 错误：4064的解决方法 （转载）"></p>
<p>The fix for this problem is very simple.</p>
<p><strong>Fix/Workaround/Solution:</strong>
</p>
<p>First click on <strong>Option&gt;&gt;</strong>
 Button of “Connect to Server” Prompt.</p>
<p><img class="alignnone" src="/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNEb3ZMM2QzZHk1d2FXNWhiR1JoZG1VdVkyOXRMMkpwYldjdlpYSnliM0kwTURZMFh6RXVhbkJu" alt="Microsoft SQL Server, 错误：4064的解决方法 （转载）" title="Microsoft SQL Server, 错误：4064的解决方法 （转载）"></p>
<p>Now change the connect to database to any existing database on your server like master or msdb.</p>
<p><img class="alignnone" src="/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNEb3ZMM2QzZHk1d2FXNWhiR1JoZG1VdVkyOXRMMkpwYldjdlpYSnliM0kwTURZMFh6SXVhbkJu" alt="Microsoft SQL Server, 错误：4064的解决方法 （转载）" title="Microsoft SQL Server, 错误：4064的解决方法 （转载）"></p>
<p>Now click on connect and it will successfully log you in. Once you
login in the system run following statement for your username and it
should fix your problem. <em>Make sure to replace [test] with your username and master with yourdatabase name.</em>
</p>
<p><code style="font-size: 12px"><span style="color: rgba(0, 0, 255, 1)">ALTER </span>
<span style="color: rgba(0, 0, 0, 1)">LOGIN [test] </span>
<span style="color: rgba(0, 0, 255, 1)">WITH </span>
<span style="color: rgba(0, 0, 0, 1)">DEFAULT_DATABASE </span>
<span style="color: rgba(0, 0, 255, 1)">= </span>
<span style="color: rgba(0, 0, 0, 1)">master</span>
</code>
<br>
GO</p>
<p><img class="alignnone" src="/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNEb3ZMM2QzZHk1d2FXNWhiR1JoZG1VdVkyOXRMMkpwYldjdlpYSnliM0kwTURZMFh6TXVhbkJu" alt="Microsoft SQL Server, 错误：4064的解决方法 （转载）" title="Microsoft SQL Server, 错误：4064的解决方法 （转载）"></p>
 
                    
            
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