SAML protocol response cannot be sent via bindings other than HTTP POST


You may see this error message occur when implementing SAML in Posit Workbench or Posit Connect. Some versions of our products require HTTP Post when sending the protocol response, whilst other versions fall back to the binding specified by the IdP.


How do I resolve this issue?


Posit Workbench

Add the following line to your /etc/rstudio/rserver.conf configuration file:


Then, restart the Workbench service:

sudo rstudio-server restart


Posit Connect

Add the following line to your /etc/rstudio-connect/rstudio-connect.gcfg configuration file:

IdPSingleSignOnPostBinding = true

Then, restart the Connect service:

sudo systemctl restart rstudio-connect



Support Ticket

If you still have issues after completing the above, you can always lodge a support ticket, where our group of friendly, and incredibly knowledgeable staff can assist with any issues that you may be having. You can submit a ticket here: