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Copy file name to clipboardExpand all lines: content/Software Support/Upload/dfu-util-errors-when-uploading-exit-status-74.md
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@@ -23,8 +23,6 @@ In this article:
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When an upload fails, you may see the message `Failed uploading: uploading error: exit status 74`. This is a generic message indicating that the upload process has failed. The specific exit status code (74) is used by the dfu-util upload utility. To understand the issue, always review the messages that appear before this notification, as they offer more detailed context about the failure.
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<!-- Whenever an upload fails, this message may appear at the end of the console output. -->
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---
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<aid="no-dfu-capable-usb-device-available"></a>
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This message indicates that no USB devices supporting the DFU upload protocol were found by dfu-util.
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Follow these steps:
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Follow these steps to resolve the error:
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1. Make sure you have the right board selected in the board selector, or the **Tools > Board** menu. If you're unsure about which board you should use, see [Select board and port in Arduino IDE](https://support.arduino.cc/hc/en-us/articles/4406856349970-Select-board-and-port-in-Arduino-IDE).
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## `dfu-util: Cannot open DFU device {vid}:{pid} found on devnum {n} (LIBUSB_ERROR_ACCESS)`
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The message varies depending on the board.
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The message varies depending on the board you are using.
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On Linux, this error can be caused by missing udev rules. This is more likely to be the cause if the error the first time you're uploading from the system.
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On Linux, this error can be caused by missing udev rules (This is more likely to be the cause if the error appears on the first time you're uploading from the system).
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<aclass="link-chevron-right">Fix udev rules on Linux</a>
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<aclass="link-chevron-right"href="https://support.arduino.cc/hc/en-us/articles/9005041052444-Fix-udev-rules-on-Linux">Fix udev rules on Linux</a>
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<aid="invalid-dfu-suffix-signature"></a>
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## `Warning: Invalid DFU suffix signature`<!-- TODO -->
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## `Warning: Invalid DFU suffix signature`
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When uploading a sketch to you may receive this warning in the console:
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When uploading a sketch, you may receive this warning in the console:
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```
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Warning: Invalid DFU suffix signature
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A valid DFU suffix will be required in a future dfu-util release
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```
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This warning is expected, and does not indicate a problem. The warning is only displayed if [verbose output is enabled](https://support.arduino.cc/hc/en-us/articles/4407705216274) in Preferences. If no other warnings or errors appears in the output, the sketch was most likely uploaded successfully.
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This warning is expected and does not indicate a problem. It is only displayed if [verbose output is enabled](https://support.arduino.cc/hc/en-us/articles/4407705216274) in Preferences. If there are no other warnings or errors in the output, the sketch most likely **uploaded successfully**.
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