When you try to print Labels through The Order Exchange, first it needs to be verified whether you can access the below;


labelservice.hosted-commerce.net
api.labelary.com


If the system blocks to access any of this that could end up with issues in printing labels. An Anti-virus software or a firewall could be the reason for why access is failing.


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Also sometimes This error can occur because the connection type of the printer (Under Retailer Settings) if set as "Network". change to be "USB" if its a local setup