If you encounter this error when trying to configure SSO, it is most commonly caused by incorrect SSO parameters and/or cookie cache problems.
To resolve this issue, we suggest checking the following:
- Grammarly SAML application has been configured correctly in your identity provider. It’s essential to validate that the following parameters have been set correctly:
- If the Grammarly SAML application is configured correctly, please re-check the IdP EntityID, SAML 2.0. Endpoint URLs, and the x.509 certificate used for SSO configuration are valid and copied correctly.
- Clear the cookies and cache, log in to the Grammarly Business owner account, and configure SSO again. (You can also try using incognito or private mode in your browser.)