https://bugs.winehq.org/show_bug.cgi?id=43783
--- Comment #14 from Hans Leidekker hans@meelstraat.net --- (In reply to Luiz Angelo Daros De Luca from comment #13)
0201:trace:winhttp:netconn_verify_cert verifying L"activation.sls.microsoft.com" 0201:trace:winhttp:netconn_verify_cert returning 00002f0d 0201:warn:winhttp:netconn_secure_connect cert verify failed: 12045
Thanks, Office can now connect to the activation server. It fails to verify its certificate though, because the root CA is unknown. This bug is fixed in current wine git, so you should upgrade and try again.