Список ошибок находится в документе https://support.ihmi.net/ea20/trouble-shooting/
EasyAccess 2.0 Error codes
1 (Not activated) - Please check if your HMI is already activated or not. To activate HMI, please reference How to activate an HMI
2 (Log-in timeout) - Your HMI can not connect to EasyAccess 2.0 server
3 (Certificate expired) - License Key has expired. Please check with your distributor.
4 (HMI client not ready) - Open and close client too frequently.
5 (HMI client will update) - HMI client will auto-upgrade to make sure compatibility. Please wait until auto-upgrade finish.
6 (HMI client does not exist) - Client program does not exist in HMI memory. Please upgrade OS to solve this issue.
7 (Download HMI client failed) - HMI client will auto-upgrade to make sure compatibility. Re-dwnload is scheduled after 10 minutes.
8 (Download Hwkey failed) - Your HMI can not connect to EasyAccess 2.0 account server. Please help check your network settings (Ex: firewall).
9 (Parse Hwkey failed) - Hardware key can not be generated. Please stop EasyAccess 2.0 and start again.
10 (Write Hwkey failed) - Hardware key can not be generated. Please stop EasyAccess 2.0 and start again.
11 (Invalid Hwkey) - See Invalid Hardware Key
12 (Download Certificate failed) - Please check if you HMI "Time/Date" setting in system setting is correct.
100 (Register HMI error) - HMI session id / password can not be generated. Please stop EasyAccess 2.0 and start again.
201 (Network gateway error) - Please check your network settings
202 (Network DNS error) - Please check you network settings
203 (Proxy error) - Please check your proxy setting
204 (Ping AuthServer fail) - Your HMI can not connect to EasyAccess 2.0 authentication server.
205 (SSL Certificate error) - Please check if you HMI "Time/Date" setting in system setting is correct.
206 (Ping account server fail) - Your HMI can not connect to EasyAccess 2.0 account server.
207 (SSL connect timeout) - Please check if you HMI "Time/Date" setting in system setting is correct.
208 (SSL connect failed) - Please check if you HMI "Time/Date" setting in system setting is correct.
При ошибках 2, 12, 205 или 208 так же смотрим https://support.ihmi.net/ea20/known-issues/
EasyAccess_2.0_Root_CA_Expiration.pdf