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Troubleshooting Shipping Label Printing Problems

Why does label printing fail when printing many orders at once?

If a PDF does not open or download when printing a large batch of labels, reduce the number of orders in the selection and try again. In one documented case, printing worked with 50 orders or fewer, while 51 or more triggered a success message but did not open the PDF or download a file. Refreshing the page with F5 and re-running the print can also help.

What should you try first?
  1. Refresh the page with F5.
  2. Print a smaller batch of labels.
  3. If needed, split the job into blocks of 50 or fewer orders.
  4. Check whether the PDF opens in a new tab or is blocked by the browser.
What if the top Print button shows an error?

If the top Print button returns an FPDF error: Error while decompressing stream, use the document icon next to the sand timer to open the label instead, then print it from there. This file path can still work even when the top Print action fails.

What if label printing returns an unauthorized carrier error?

If printing labels returns a carrier error such as Unauthorized or an expired access message, the issue is returned by the carrier connection. Review and follow the carrier-side procedure for reconnecting or refreshing access, then try printing again.

Which browser checks are worth trying?

If the error happens from the top Print button:

  • Try an incognito/private window
  • Try a different browser
  • If the same behavior appears across browsers, use the document-icon workaround to print the label
Summary

For shipping label printing problems, the most practical checks are to reduce batch size, refresh the page, try the document-icon path for printing, and verify carrier connectivity when the error is returned by the carrier.