NetworkError when attempting to fetch resource

kiouplidis

In Sentry, we received the following error:

NetworkError when attempting to fetch resource. (auth.*.com)

The URL points to the login of the FusionAuth Admin panel and is used for authentication from our application.

Occurred:
Apr 23, 2025, 8:50:46 AM UTC

Received:
Apr 23, 2025, 9:05:42 AM UTC

Can you find anything in your logs regarding the reason for this error and how to prevent it in the future?

For the admins: By accessing my account information, you will find more information about the domain name. (Hidden here because this is a public post.)

Let me know if you need further adjustments!

mark.robustelli

@kiouplidis, can you please give us a little more detail on how you are set up and exactly what you are trying to do. I see you are getting a NetworkError when trying to reach (auth.*.com). Is that an instance of FusionAuth hosted by FusionAuth or is that an instance of FusionAuth that you have deployed? How are you trying to access the resource? Through a web browser or are you trying to execute an API call? The more information you can provide, the easier it will be to help.

If you have a paid plan which includes technical support, please open a ticket via your account portal.

iclendjanice

@mark-robustelli said in NetworkError when attempting to fetch resource:

@Survival Race, can you please give us a little more detail on how you are set up and exactly what you are trying to do. I see you are getting a NetworkError when trying to reach (auth.*.com). Is that an instance of FusionAuth hosted by FusionAuth or is that an instance of FusionAuth that you have deployed? How are you trying to access the resource ? Through a web browser or are you trying to execute an API call? The more information you can provide, the easier it will be to help.

If you have a paid plan which includes technical support, please open a ticket via your account portal.

Have any recent changes been made to the CORS configuration or FusionAuth app settings?

trentini

Hi there, I'm working on the same project. And since this forum post, the error did not occur again for about a month and has recently occurred 3 times in the last week.
The instance is a fusionauth instance.
(auth.*.ch is a CNAME (alias) for bnjmvfriojf0pzpzhtmmz6xf2sgl6b.durable.fusionauth.io)

The access where the error occurs was via browser (firefox to be exact if sentry is to be believed).

There are no recent changes to the CORS config.

For most of our users this does not seem to be an issue. It happens very isolated for a handful of users.