Can someone maybe help me with the following. *If you install an EA on a pc you will use one of the assigned activations. After updating the pc and rebooting, the EA was not working/showing correctly on the MT4 charts. I had to delete the EA from the Market folder and re-install. Is it then normal that you use one more of your activations when re-installing on the same pc as before? How will the EA's recognice that it is the same pc?
As I understand - one activation per same version of Windows.if you re-install the Windows so you will need to spend the other activation.
As to updating ... if it is related to Windows 10 (Windows 10 Fall Creators Update for example) so read this information from MQ:
Forum on trading, automated trading systems and testing trading strategies
Windows 10 Fall Creators Update to make saved MetaTrader passwords invalid
MetaQuotes Software Corp., 2017.10.18 12:55
On October 17, Microsoft officially released a major update of their operating system Windows 10 Fall Creators Update.
This update affects configurations and encryption keys similar to the
installation of a new Windows operating system. In order to protect user
information, the MetaTrader platform binds all data to the operating
system and hardware of the computer, on which it is installed. This
protection method ensures that even if the platform files are stolen,
hackers will not be able to access the trader's accounts or to use
products purchased from the Market.
Unfortunately, after the installation of Windows 10 Fall Creators
Update, all trading account passwords stored on your computer will
become invalid. We highly recommend that you prepare for the new Windows
release and save your passwords in a safe place, in order to be able to
connect to your accounts after the update.
Also, the launch of installed and activated applications that were
purchased from the Market will not be possible due to the change of
encryption keys. Such products will require a new activation, because
all products are bound to an operating system. We will automatically
provide an additional activation for all products purchased from the
Market regardless of the operating system, similar to providing
additional activations after the previous release of Windows 10 Creators
Update. So MetaTrader Market users will not lose product activations
after the installation of Windows 10 Fall Creators Update.
Activations of demo products will also be lost, and you will need to re-download such applications from the Market.
It is what I know. For more detailed information - write to the service desk.
And some more information -
Product Activation Question
Stuart Browne, 2015.03.06 11:32
The activation number is the number of different PC's you can use the product on with one license, not how many times it's been downloaded. It's a common misconception :)
As Alain said above, you get one activation per PC, regardless of the number of accounts you are running on that PC. So if the product shows 5 activations, you can use it on 5 different PCs under the MQL5 login account you purchased the indicator or EA on.
Best way to monitor EA execution remotely
Sergey Golubev, 2016.09.29 12:36
If it is about the Market so the buyer can use EA according to the number of the activations which are linked to the PC and OS:
Rules of Using the Market Service -
So, 1 activation = unlimited using on 1 PC (one particular computer - hardware) with one OS (Operating System, for example - with Windows 8.1).For example, if I buy your EA via the market with 1 activation so I can use it on one my PC only with my OS (Windows XP for example) only. And I can not use EA on the other computer, and I can not use EA with same computer with different OS. So, this is the protection: even if someone can get your EA remotedly (from you or from the buyer) so he/she can not use it: he/she have to buy this EA with the activation fro the market (from you for example).
Thank you all for the answers. It was the major upgrade of windows, and I can see that I'm using a "new" activation, just like it a new pc.
Each activation on a different PC counts as + 1 activation.