> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ntop.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Security Error

## Security Error

### About the error

**Issue:**
The block failed to run due to security settings.

**Applies to:**

* Run Command Block

**Solution:**
The solution depends on the Run Command Permission Setting (found in Settings > Data). Based on your current permission setting, follow the instructions below:

* “Prompt per File” setting:
  Close and reopen the file, and you will be prompted to trust the file again.
* “Prompt per Block” setting:
  Click on the green “Rebuild” icon on the block, and you will be prompted again to trust the block.
* “Disallow All” setting:
  Change your settings to one of the other two options, and then close and reopen nTop.

Read more about **Run Command Permission Settings** [here](/_user_interface/_settings/run_command).

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