Question: Will "ClickOnce installer" also updates programs automatically?
Yes, Click Once can be self updating.
This means that the application checks by itself for updates. If an update is available, ClickOnce will automatically update the application (by replacing the updated files).
Occasionally users have issues installing cTrader/cAlgo. Clearing the ClickOnce cache should resolve this issue. Performing a clean installation of cTrader may also resolve this issue.
