SAML Plugin POST binding

We are using Matomo 4.1.1 and are configuring SAML Authentication with SAML Plugin
We have specified HTTP-POST binding in Metadata.

However, the initial AuthnRequest is made using Redirect Binding. We and the IdP is expecting a HTTP-POST binding. (as in

See attached screenshot

Any ideas or Is this not supported?


Hi there,

Can you please contact support directly at We can investigate further from there.