title: Postman Bad Request - Request Too Long
body: <p>I am using Asp.Net Core 3.1 API with Identity Server and I am using Postman as an API tester from long time and it is working perfect, but, after version update to 8.+.+ the Postman return me this error:</p>
  <pre><code>&lt;HEAD&gt;
      &lt;TITLE&gt;Bad Request&lt;/TITLE&gt;
      &lt;META HTTP-EQUIV=&quot;Content-Type&quot; Content=&quot;text/html; charset=us-ascii&quot;&gt;
  &lt;/HEAD&gt;
  
  &lt;BODY&gt;
      &lt;h2&gt;Bad Request - Request Too Long&lt;/h2&gt;
      &lt;hr&gt;
      &lt;p&gt;HTTP Error 400. The size of the request headers is too long.&lt;/p&gt;
  &lt;/BODY&gt;
  </code></pre>
  <p>I putted in header <strong>key</strong> (Content-Type) and the <strong>value</strong> (application/json) and authorization is in type of <strong>bearer</strong> token with empty body.</p>
  <p>I followed many questions to solve this issue like the bellow mentioned:</p>
  <ul>
  <li><a href="https://stackoverflow.com/questions/49052098/bad-request-request-too-long">bad request - request too long</a></li>
  <li><a href="https://github.com/IdentityServer/IdentityServer3/issues/1124" rel="nofollow noreferrer">https://github.com/IdentityServer/IdentityServer3/issues/1124</a></li>
  <li><a href="https://community.postman.com/t/400-bad-request/18252" rel="nofollow noreferrer">https://community.postman.com/t/400-bad-request/18252</a></li>
  </ul>
  <blockquote>
  <p><strong>How can I solve Postman (Bad Request - Request Too Long) issue?</strong></p>
  </blockquote>