
yfhks (yfhks) asked a question.
Hi, since 3 weeks (11 may) I am getting an error when I use OKTA to login to an application (OIDC). It always worked fine, but now it returns the following message after debugging: "invalid client/no client credentials found"
Is anyone familiar with this issue? What could it be that is suddenly started to produce these messages?
We provide the following parameters int the body of the request (first line is the URL of the request)

Hi, @yfhks (yfhks)
Thank you for posting on our Community page!
My advice would be to leverage the Okta Developer forums for this type of questions and take advantage of their expertise.
https://devforum.okta.com/
Thank you for reaching out to our Community and have a great day!
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Okta is giving you the answer, you just need to dig a little deeper. In short, something has changed if it previously worked. If you are sure the application configuration in Okta hasn't changed, I would check the URL endpoints you are using.
It's sometimes easier to debug outside of your application. My go to is this: https://oidcdebugger.com/. Make sure you add the debugger URL endpoint as a redirect URI in your Okta client, then hack away at it.