What Is Tomcat Default Administrator Password ?

By default, Tomcat does not enable admin or manager access. To enable it, you have to edit the “%TOMCAT_FOLDER%/conf/tomcat-users.xml” manually.
File : tomcat-users.xml (before update) , initially, Tomcat comments all users and roles like above.
<?xml version='1.0' encoding='utf-8'?>
<tomcat-users>
<!--
  <role rolename="tomcat"/>
  <role rolename="role1"/>
  <user username="tomcat" password="tomcat" roles="tomcat"/>
  <user username="both" password="tomcat" roles="tomcat,role1"/>
  <user username="role1" password="tomcat" roles="role1"/>
-->
</tomcat-users>
File : tomcat-users.xml (after updated)
<?xml version='1.0' encoding='utf-8'?>
<tomcat-users>
<!--
  <role rolename="tomcat"/>
  <role rolename="role1"/>
  <user username="tomcat" password="tomcat" roles="tomcat"/>
  <user username="both" password="tomcat" roles="tomcat,role1"/>
  <user username="role1" password="tomcat" roles="role1"/>
-->
  <role rolename="manager"/>
  <role rolename="admin"/>
  <user username="admin" password="admin" roles="admin,manager"/>
</tomcat-users>
To enable admin access, just update the content like above. Saved it and restart Tomcat, now you can access Tomcat admin or manger pages with user = “admin” and password = “admin“.
<role rolename="manager-gui"/>  
<user username="tomcat" password="tomcat" roles="manager-gui"/> 

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