Is there an alternate activation option, other than online?


I’m trying to activate a free license.  The error I get is:

“Problem has occurred when contacting the licensing server: The request failed with an empty response”

I’m behind a proxy server, and running Wireshark I can see that the proxy returns a “307 temporary redirect”.  Rather than try to troubleshoot Em working with the company proxy, it might be simpler to activate using an offline method - if one exists.

Is there another way to activate the product?



Hi Tom, no unfortunately eM client has to be connected to the licensing server at least once in 14 days, otherwise your license would be deactivated.
This is due to our licensing policy.

Thank you for understanding,

I was able to get to the bottom of this with the help of our proxy administrator.  In case anyone else has trouble with activation through a Zscaler proxy, you need to set the host “” to bypass authentication through the proxy.  I’m correctly licensed now, thanks.


Hi Tom, I’m glad you’ve managed to resolve the issue, please let us know if you come across any other questions or issues, we’ll be happy to help.