Why does my n8n Cloud workflow node report 'Node has no access to credential' in version 1.79.1?

Below is an explanation of what the error generally means and some troubleshooting steps based on common causes:

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What the Error Means

The error message:

PLAINTEXTCopied
Node has no access to credential

indicates that while the node appears to have a credential listed in its settings, when executing the workflow the node isn’t able to retrieve or validate it. In essence, the node isn’t “recognizing” the credential even though it shows up in the UI.

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Common Causes & Troubleshooting Steps

• Credential Name Mismatch
  The system checks that the name specified in the credentials array exactly matches the name used in the credential class (typically defined in your node’s code). Even a small typo or case difference can cause this error.
  Action: Verify that the credential’s property name in the node exactly matches the name in the credentials class.

• File or Configuration Issues
  Sometimes issues occur because of minor misconfigurations such as file naming or casing issues (common on Windows environments) or if changes to a node's description properties haven’t been picked up by restarting the process.
  Action:

  • Make sure that if you've recently changed file names or properties, the changes are reflected in the node’s configuration.
  • Although less likely in n8n Cloud, consider whether a service restart or cache refresh is needed. In self-hosted instances you’d usually restart the process; on Cloud, if similar issues appear persistently, contacting support might be necessary.

• Environment Specific Behavior
  You mentioned that using the exact same workflow in a self-hosted instance works fine. In such cases the problem might be due to an environment-specific issue on n8n Cloud where the node running the workflow isn’t correctly picking up the credential.
  Action: Double-check that there isn’t a credential sharing or permissions problem interfering with credential access, even though you are the owner. Ensure that no changes (intentional or behind the scenes) in the Cloud environment have affected the credential resolution.

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Final Thoughts

Since you’ve already tried recreating the credential and node, and even exporting/importing the workflow on a self-hosted instance confirms it works there, the next steps would be to:

• Double-check the naming and configuration of the credential in your node’s code/configuration.
• Review any recent changes or updates (for example, to file names or property names) that might have inadvertently caused a mismatch.
• Contact n8n Cloud support if the issue persists—since the environment in the Cloud may have specific behaviors or caching issues affecting credential access.

This error is typically a sign of a mismatch between the configuration in the node and the credential’s definition. Addressing that alignment should resolve the issue in your workflow.