Please note: A recent Microsoft Windows 7 update could interfere with your Endicia Professional or DYMO Stamps software's ability to connect with our servers.

If your Endicia Professional or DYMO Stamps software is displaying an error message with the details of "The underlying Connection was closed...", the recommended solution is to use the System Restore function to revert your computer back to just before the update.

Systems Status: All Systems Processing normally.

Contact Support

Please be sure to have the following information ready when you contact us.

  • Account Number
  • Question or description of the problem
  • If there is an error message, please include it (print or copy of the details)

Phone: 1-800-576-3279 x130
Fax: 650-321-0356
Hours: M-F 6am-5pm (Pacific)

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