Err when open eM Client after a while

Error show after a few minutes open up eM Client : eM Client has been unable to contact the update server for at least 14 days. To be able to continue using this product, please ensure that the server is accessible from your network

Last attempt resulted in the following error :
RetriveLicenseXml failed

The application will now run in offline mode

See this thread for information to first “check that you can access the licensing servers” to see if that is the problem or if it’s a certificate issue etc.

Please see:

https://support.emclient.com/index.php?/Knowledgebase/Article/View/242/7/retrievelicensexml-failed