GAE: Unable to update app: Bad authentication response: 404 Not Found [closed]

Answer 1

1. Install Google Plugin for Eclipse.
2. Open your project in eclipse. Once you install the plugin successed, you will see a new button of "G" on eclipse buttons bar.
3. Click the "G" button and then click "Deploy to App Engine".
4. Done.

Answer 2

I was having this same issue. As it turns out the authentication method (ClientLogin) I was using to deploy to appengine was deprecated (I was deploying using mvn gae:deploy). Google now wants us to use their new OAuth 2.0 authentication for deploying to appengine: https://cloud.google.com/appengine/docs/deprecations/clientlogin

To fix this issue I had to update my appengine maven plugin to use the latest version so I could deploy.

I added this to my pom.xml:

<plugin>
   <groupId>com.google.appengine</groupId>
   <artifactId>appengine-maven-plugin</artifactId>
   <version>1.9.34</version>
</plugin>

Then I used this command to deploy (instead of mvn gae:deploy):

mvn appengine:update

For more info you can check out this info on how to deploy to appengine: https://cloud.google.com/appengine/docs/java/gettingstarted/uploading

Answer 3

I had opened multiple google accounts. So, I did close all and deployed it again. It did deploy. It was my mistake.