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Hello I have configured an external IDP to use with FusionAuth following the guide https://fusionauth.io/docs/v1/tech/identity-providers/samlv2/
When the callback returns and the client browser do the POST to the ACS URL, I receive an empty HTTP response with 403 code from FusionAuth.
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This is a CORS error. You'll need to ensure POST is an allowed HTTP method, and the origin of your SAML IdP is configured as an allowed origin.
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D dan moved this topic from Q&A
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D dan moved this topic from Frequently Asked Questions (FAQ)