Ted Chiang 0 Posted June 15, 2022 Share Posted June 15, 2022 Dear Sirs When installing ESET Internet Security, it cannot be activated by entering the license key, and the error message ECP.20003 Activation failed. We could not reach the activation server ECP.20003 OS is Windows 11 User is a home users do not set up firewalls and other equipment. In the same network, other computers can register. please help. The attachment file is ESET log and Wireshark log. Log-20220615.zip Link to comment Share on other sites More sharing options...
Administrators Solution Marcos 4,694 Posted June 15, 2022 Administrators Solution Share Posted June 15, 2022 it appears there is no attempt to communicate with activation servers (edf.eset.com). Was the pcap log really from an activation attempt? Nevertheless, I'd recommend opening a support ticket to confirm that something prevents ESET from communicating with activation servers. Before I'd suggest removing the following records from the hosts file and rebooting the machine: expire.eset.com ocsp.globalsign.com ocsp2.globalsign.com Link to comment Share on other sites More sharing options...
Ted Chiang 0 Posted June 17, 2022 Author Share Posted June 17, 2022 Dear Sirs I am removing records from the hosts file and netsh winsock reset and rebooting the machine. This error has been resolved, thank you Link to comment Share on other sites More sharing options...
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