If you see this error when setting up SSO, it might indicate that the certificate is invalid or corrupted.
The certificate can be invalid if:
- the wrong certificate is used
- the certificate is copied incorrectly
- the certificate has expired
To resolve this issue, we recommend the following steps:
- In your identity provider, check if the certificate is active and not expired.
- Download the certificate, open the file in the text editor, and copy the content to the Grammarly SSO set-up page. Make sure that the content is copied correctly.
If this doesn’t resolve the issue, we recommend generating a new certificate in your identity provider and configuring SSO on the Grammarly side using the new certificate.
Note: With Microsoft Entra ID (Azure AD), there can be a delay in updating the parameters on the Entra ID side. To avoid any issues with configuring SSO on the Grammarly side, we recommend waiting 1–2 hours after generating the certificate in Entra ID and before enabling SSO in the Grammarly interface.