Hi everyone, I’m having an issue connecting my OpenAI credentials in n8n Cloud. n8n version: 2.19.3 Credential: OpenAI account Base URL: https://api.openai.com/v1 Organization ID: empty Custom headers: disabled OpenAI billing: active API key: newly created, with All permissions, inside the c…

Sounds similar to this thread [image] Help connecting OpenAI credential Questions <a name="p-547990-hey-guys-i-cant-connect-my-openai-credential-on-my-n8n-platform-but-before-it-was-working-well-why-i-created-a-new-account-yesterday-and-the-problem-happened-like-this-1" class="anchor" href="#p-547990-hey-guys-i-cant-connect-my-openai-credential-on-my-n8n-platform-but-before-it-was-working-well-why-i-created-a-new-account-yesterday-and-the-problem-happened-like-this-1" aria-label="Heading link"> Hey guys, I can’t connect my OpenAI credential on my n8n platform, but before it was working well. Why ? I created a new account yesterday and the problem happened like this…

same here.im stock with this,trying to debug this for about 4 hours and still same result

Temporary solution, if you don’t need to the latest features, you can downgrade to 2.18.5, still works here

The same problem with n8n running via localhost n8n = 2.19.4

If your intention is to create an AI chatbot, you may want to try this workaround that I’ve described in this thread. [image] Help connecting OpenAI credential Questions Unfortunately, doesn’t work for me… [Capture d'écran 2026-05-06 195142]

[image] Vinicius_Adam_Moraes: Hi everyone, I’m having an issue connecting my OpenAI credentials in n8n Cloud. n8n version: 2.19.3 Credential: OpenAI account Base URL: https://api.openai.com/v1 Organization ID: empty Custom headers: disabled OpenAI billing: active API key: newly created, …

Just to close this out, This issue was resolved recently. Please update and all should be good.

OpenAI credentials fail on n8n Cloud 2.19.3 with config.headers.setContentType is not a function

Questions

WilsonT3D May 7, 2026, 1:08pm 7

If your intention is to create an AI chatbot, you may want to try this workaround that I’ve described in this thread.

Topic		Replies	Views
OpenAI credential fails in n8n Cloud with "config.headers.setContentType is not a function" Questions credentials , core , openai	4	231	May 16, 2026
Error connecting OpenAI API in n8n cloud – config.headers.setContentType is not a function Questions	3	164	May 12, 2026
Credential OpenAI problem Questions node	1	152	May 8, 2026
OpenAI api key wont connect Questions	8	574	May 13, 2026
HTTP Request node fails with "config.headers.setContentType is not a function" when calling api.openai.com Questions	3	101	May 13, 2026

OpenAI credentials fail on n8n Cloud 2.19.3 with config.headers.setContentType is not a function

Related topics