USPS Shipping Errors That I Have No Way To Fix

I get this message:

Error: Authorization failure. Perhaps username and/or password is incorrect.

When I try to test a USPS shipping method rate calculator, however when I configured USPS there was no where to put a password, just a username. Does anyone know what the problem is?


Did you ever get a fix for this, as I'm having the same problem.

Many Thanks.

jim mccann

Check with USPS that your account is set up to use their production server.


We are sorry to hear that you experience such a problem.

This error means that something is wrong with your USPS account settings. Please make sure that the User ID specified in USPS settings is correct. Also note that you should confirm your USPS User ID before using it. You should call USPS (800-344-7779) to activate your account on the production servers. It will not work until you do this.

Anastasiya Kozlova

CS-Cart Support Team