How to troubleshoot the Tomcat Administration page 403 Access denied

After installing tomcat and configuring the Tomcat environment variable, visit the Manager app page with the 403 Access denied error, and the workaround is as follows:

First, in the Conf/tomcat-users.xml file, add the following code in the </tomcat-users> front:

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1. <role rolename="Manager-gui"/>
2. <user password="admin" roles="Manager-gui" username="Tomcat"/>

Then reboot Tomcat and revisit the Manager app page, if the 403 access denied error still occurs, then the IP access is restricted.

We open the/webapps/manager/meta-inf/directory under the context.xml file, not the conf/directory Context.xml file, must not be mistaken

We will comment out or fix the contents

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1. <Valve classname="Org.apache.catalina.valves.RemoteAddrValve"
2. allow="127\.\d+\.\d+\.\d+|::1|0:0:0:0:0:0:0:1|\d+\.\d+\.\d+\.\d+" />

Save, then restart Tomcat, re-access the Manager app page, OK, the problem is resolved.

How to troubleshoot the Tomcat Administration page 403 Access denied