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3D Print Troubleshooting, Calibration & Parts

HMS 0500-0400-0001-0004: The Print File Is Unauthorized

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HMS 0500-0400-0001-0004 — The print file is unauthorized
Short answer

HMS 0500-0400-0001-0004 means the print file is unauthorized. The bytes are readable: what the printer objects to is where the file came from or how it was signed, which is a different problem from a damaged file.

In practice it usually means a file copied between machines, re-exported by something else, or dropped onto a drive by hand rather than sliced and sent.

Not a corrupt file. A file the machine will not accept from that source.
Not a corrupt file. A file the machine will not accept from that source.

Where to buy

Move files without a middleman

A plain USB 3 card reader gets the sliced file onto the card exactly as the slicer wrote it. Phone apps and cloud round-trips are where files quietly acquire a new provenance.

Keep one hub for the bench

A USB-C hub with its own card slot means the laptop that slices is also the machine that writes, every time. Consistency is what stops this message, far more than any setting.

Use a cable that carries data

A short USB-C data cable is worth owning precisely because many cables in a drawer are charge-only. A transfer that silently fails halfway is another way to end up with a file the printer will not take.

Then re-slice and resend

Slice again from the original model and send from the slicer rather than copying the file. If that works, the file path was the problem and nothing is wrong with your machine.

How HMS 0500-0400-0001-0004 differs from an unreadable file

A file that arrives damaged is HMS 0500-0400-0001-0003. Unauthorized means the content is intact and the origin is not accepted.

When the network is involved instead

A reporting failure is HMS 0500-0400-0001-0002. General order of work is in troubleshooting and the machine in the X1 Carbon.

HMS 0500-0400-0001-0004 FAQ

Is my file corrupt?

No. That is a different code entirely.

Can I print third-party files?

Re-slice them yourself. Send from the slicer.

Does cloud or LAN mode matter?

It can. Try sending directly from the slicer.

Will re-slicing always fix it?

In most cases, because it restores the origin.

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