I updated Windows 10 to Feature update version 2004. After restarting, none of my indicators or EA's were working. In the terminal journal, repeated errors about failure to load indicators and ea's. In the expert tab, I noticed invalid license errors. On searching the forums, I learned I need to re-download ALL my previously purchased and downloaded indicators, utilities and ea's. This is very cumbersome and time-consuming. Also, it decreases the number of remaining purchased product activations, for no reason. The support chat bot is useless on this.
Forum on trading, automated trading systems and testing trading strategies
Sergey Golubev, 2020.05.31 14:42
This is all normal, a new activation is needed after every major windows upgrade.
Usually MQL5 credits one axtra activation, after major universal windows upgrades, but not for upgrades or computer formats you are doing yourself.