handle-common-mendix-sso-errors.md

title	category	tags
Handle Common Mendix SSO Errors	Monitoring & Troubleshooting

1 Introduction

Below you will find solutions for some of the most common problems you may encounter when developing an AppCloud-enabled app.

After using this how-to, you will know how to do the following:

• Monitor and troubleshoot common Mendix SSO errors

2 "404 Not Found" Errors When Navigating to /openid/login

A frequent cause of "404 not found" errors when navigating to /openid/login is that the OpenID request handler is not enabled. It should be enabled on startup.

To fix this, make sure the AppCloudServices.StartAppCloudServices microflow is executed during the startup of your application. You can do this by setting it as the app's after-startup microflow or by having the application's existing after-startup microflow trigger it.

3 Realm Verification Errors

These are commonly caused by compatibility issues with JAR files in the <projectpath>/userlib directory of your project. For details on the most common compatibility issues, refer to the Troubleshooting chapter of the Mendix Reference Guide.

4 Read More

• Finding the Root Cause of Runtime Errors
• Clearing Warning Messages in Mendix
• Testing Web Services Using SoapUI
• Monitoring Mendix Using JMX
• Debugging Java Actions Remotely
• Log Levels
• Debugging Microflows
• Debugging Java Actions
• Common Mendix SSO Errors
• Debugging Microflows Remotely