Webchat SSO: 401 Unauthorized on Token Exchange after Okta IDP Cert Rotation

Hey everyone, running into a weird issue with our Webchat SSO integration after rotating our IdP certificates in Okta.

We use Genesys Cloud as our contact center platform and have Webchat embedded in our customer portal. We configured SSO using the genesys.cloud.sso flow, relying on SAML assertions from Okta to mint the Genesys JWT. Everything was working fine until yesterday when we rotated the signing certificate in Okta.

I updated the SAML certificate in the Genesys Cloud Admin console under Security > Single Sign-On > Identity Providers. I also verified that the Assertion Consumer Service (ACS) URL and Entity IDs match perfectly. However, users are now getting a 401 Unauthorized error when trying to connect to the chat widget.

Looking at the browser network tab, the initial SAML POST to the ACS endpoint succeeds (200 OK). But the subsequent call to /api/v2/auth/oauth/token (or whatever the internal token exchange endpoint is for SSO) is failing. The response body just says invalid_grant with no further details.

I’ve checked the Genesys Cloud audit logs and see the SAML assertion is being received, but the token exchange step is failing. I tried clearing the Okta session and forcing a fresh login, but same result. I also verified that the name_id attribute mapping in Okta matches the email attribute expected by Genesys.

Has anyone else hit this after a cert rotation? Is there a cache issue on the Genesys side that takes longer to clear than expected, or did I miss a step in updating the metadata? We’re using the latest Webchat SDK (genesys-cloud-messaging-webchat v2.x). Any pointers would be appreciated. Thanks!

While updating the SAML certificate in Genesys Cloud is the standard fix, I often see teams overlook the downstream impact on Speech Analytics and Recording policies during IdP rotations. If your evaluation forms or quality monitoring workflows depend on specific SSO attributes passed in the JWT, a mismatch can cause silent failures in metadata tagging.

Before finalizing the certificate swap, verify that your Speech Analytics configuration is correctly parsing the new token payload. Specifically, check if you are using custom claims for agent identification or session tagging. If your eval forms rely on these attributes for auto-populating “Agent Name” or “Department” fields, a schema mismatch will break your calibration data integrity.

I recommend running a quick test interaction after the rotation. Use the Genesys Cloud API to inspect the decoded JWT payload:

GET /api/v2/auth/accesstoken

Check the sub and email claims against what your QM expects. If you use NICE CXone alongside Genesys, ensure the SAML mapping in CXone is also updated to reflect the new certificate fingerprint, as cross-platform SSO sync can lag if not explicitly triggered.

Additionally, review your recording retention policies. Sometimes, SSO failures result in sessions being logged as “Anonymous,” which can skew your quality score averages if those recordings are inadvertently included in random audits. Exclude anonymous sessions from your calibration sets temporarily until you confirm the token exchange is stable across all endpoints. This prevents skewed baselines during the transition window.