Hey guys, I built a workflow with Dropbox, but I discovered that the access token expires after 4 hours. What is the solution? If I use OAuth, will the problem be solved?

Hello @Ali4 , Yes, switching to OAuth2 is exactly the solution. When you set up the Dropbox OAuth2 API credential in n8n, it handles the “Refresh Token” automatically. This means n8n will silently get a new access token for you in the background whenever the old one expires, so your workflow will …

This is good news. However, in the current workflow, after Dropbox upload node, there is a Dropbox HTTP file sharing link node.What should I do in this situation?

Yep OAuth should solve ur problem, i had a usecase with dropbox and never had issues with it.

I’m doing something wrong, but I don’t know what it is. I hope you can help me. Problem creating credential OAuth url is not a valid URL. [unknown_2026.02.16-14.29] [unknown_2026.02.16-14.29_1] [unknown_2026.02.16-14.32]

Have you used it in HTTP Node? Because I’m facing this problem now, can you give me your opinion? Problem creating credential OAuth url is not a valid URL. [unknown_2026.02.16-14.29] [unknown_2026.02.16-14.29_1] [unknown_2026.02.16-14.32]

[image] Ali4: I’m doing something wrong, but I don’t know what it is. I hope you can help me. Looks like you pasted your actual Access Token string into the Access Token URL field. That field needs to be the API endpoint, not the password itself. Change Access Token URL to exactly this: http…

hey @Ali4 you’re using the wrong credential type, that “Dropbox OAuth2 API” one is for when you want to manually configure everything yourself with your own Dropbox app. You should use the regular “Dropbox” credential instead which is the pre-configured OAuth2 option that n8n has already set up with…

Well, there is an improvement now, but this is the new problem, as you can see in the picture. This is the text of the error from n8n: Unable to sign without access token. [unknown_2026.02.17-09.09] Do I need to do anything extra in Dropbox, or is the problem with N8N? I tried using the Header…

Before the HTTP request node There is an official Dropbox upload node. The node outputs a PDF file. I want a shareable link for the file, and the only way to do this is by creating a http request

Dropbox access token Expired after 4 hours

Questions

A_A4 February 16, 2026, 9:42am 4

You just need to update the Credential field in your Sharing node to use the same “Dropbox OAuth2” account you created for the Upload node.

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Dropbox access token Expired after 4 hours

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