Battle.net patch or update download error HD

A lot of people -me included- have a problem of "downloading data" using battle.net client. Something seems to be downloading but it is not clear why battle.net fails to show the download in progress It is also advisable to try the below steps: 1- https://us.battle.net/support/en/article/manually-patching-agent 2- https://eu.battle.net/support/en/article/deleting-battlenet-files 3- https://eu.battle.net/support/en/article/install-troubleshooting