Server Tomcat v8.5 Server at localhost failed to start

Server Tomcat v8.5 Server at localhost failed to start is the most common error when you are working on any Java web application. In this tutorial, We will focus to solve this tomcat error (Server Tomcat v Server at localhost failed to start).

Tomcat is the third-party and open source server that is used to deploy Java applications. you can easily download the tomcat server on their official website “” There are billions of devices are running over the tomcat server.

One fact about the tomcat it’s the only server that is majorly used in the software industry to deploy Java applications on the live servers as well as on the local machines. So now let’s come to the point and focus to solve the tomcat error “Server Tomcat v8.5 Server at localhost failed to start”

Server Tomcat v8.5 Server at localhost failed to start

There may be many reasons for this error. so we have to check each and everyone’s points one by one. So here I am sharing some of my experience to solve this error. The error “Server Tomcat v8.5 Server at localhost failed to start” is coming from the server site so keep in mind the problem is coming only from your server code.


Open your server-side source code like for Servlet, Spring controllers, or JSP its depends on the technology that is using in the application.

Check logs or errors into the console of your editor so it will help you to find the exact root file of the error. Now observe the file there might be many reasons. in the below points, I am discussing some of them.

  • If you are performing a read and writing operation then make sure your file and folders have all the permission to read and write.
  • The file should be error-free. Means to make sure It does not contain any syntax or programming error.
  • If you make any changes in the servlet or server-side then make sure you have to restart the server.
  • Verify the version make sure you are deploying an application on the correct version of tomcat as per the code or API requirements.

Clean the tomcat server

Find your server into the IDE Windows==> Show View ==> Other==>Server. When you follow this path. there will be a configured server. Right-click on the tomcat server and Click to clean.

Clean the tomcat work directory

It might be the reason some files of other projects are creating problems so make sure you clean your work directory.

To clean the tomcat work directory again find the server. Right-click on the server and click to the Clean Tomcat work directory it will clean your work directory.

Delete tomcat server

  1. Again find the server from Windows==> Show View ==> Other==>Server. 
  2. Right-click on the server and click on the delete option.
  3. Configure the server again

Delete tomcat server from Project Environment

  • Follow the above steps and delete the server.
  • Right-click on the root folder of the project.
  • Click to the “Run on Server” and select tomcat server.
  • Click on the link “Configure runtime environment”.
  • Select the Tomcat server and click to “Remove” button.

Run one instance at a time

Make sure, you are running only one instance of the tomcat at a time. Check your other servers like XAMPP or WAMP is not running tomcat internally.