question Basic Authentication is disabled and Token Based Authentication and OAuth is disabled in Zurich in Community Central forum

Basic Authentication is disabled and Token Based Authentication and OAuth is disabled in Zurich

sriram-v — Fri, 09 Oct 2026 13:37:59 GMT

Post Upgrade of my Tenant , I have lost access to make API calls from outside to my SaaS Personal instance completely ,it was working fine all these years but it has stopped working since the Upgrade to Zurich Tenant , all possible ways of making API calls with Basic Authentication is disabled and Token Based Authentication and OAuth is disabled in Zurich Tenant.

Re: Basic Authentication is disabled and Token Based Authentication and OAuth is disabled in Zurich

Tanushree Maiti — Fri, 09 Oct 2026 15:24:15 GMT

Hi @sriram-v

"Basic Authentication is disabled and Token Based Authentication and OAuth is disabled in Zurich Tenant ." As per your statement , what do mean disabled ? Is it become read only for you.

Could you also share a screenshot of the current configuration so we can better understand the issue?

If the connection has been interrupted, please try re-establishing it and let us know if the issue persists.

Re: Basic Authentication is disabled and Token Based Authentication and OAuth is disabled in Zurich

Rakesh_M — Fri, 09 Oct 2026 16:51:54 GMT

Hi @sriram-v ,

I believe Basic Authentication Restriction is enabled on your instance. When this restriction is enabled, only users with the snc_basic_auth_api_access role can make API requests using Basic Authentication.

Try adding the snc_basic_auth_api_access role to your user record and test the API call again.