Ory is the largest open source community in the world for cloud software application security. We maintain advanced open source security software solving authentication, authorization, access control, application network security, and delegation. Ory implements a variety of industry and best-practice standards including OAuth 2.0 / OAuth 2.1, OpenID Connect, Zero Trust Networking, Google Zanzibar Policy Framework, FIDO2 U2F, WebAuthn, TOTP, and more.

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How do I create a client/app for my server side application that doesn’t expect pkce ? 

When I create a client with client id and secret and do auth, I get the below error 

"debug":"The server is configured in a way that enforces PKCE for clients.","message":"invalid_request","reason":"Clients must include a code_challenge when performing the authorize code flow, but it is missing.

 I tried setting token_endpoint_auth_method to “none”, but it doesn’t help. 

See:
<https://github.com/ory/hydra/blob/f9cee328f4695b418542f068b29f6ff6372dc973/spec/config.json#L1038-L1050>

If you're on Ory Network:
```ory patch oauth2-config $PROJECT_ID --replace /oauth2/pkce/enforced=false --format yaml```

Note that using PKCE is highly recommended if at all possible.