Is a trade opened twice by Expert Advisor if I use MT4 on laptop and MT4 on VPS simultaneously?

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Hello guys,

     I'm new to MT4 VPS, so I have a question regarding its working mechanism. Assume that, I have uploaded an Expert Advisor to MT4 VPS, at the same time, I open MT4 on my laptop and use that Expert Advisor on my laptop. What happens when a signal (buy/sell) comes? Will the trade be opened twice, one on MT4 VPS and one on MT4 on my laptop? OR will the trade be executed only once with that signal?

Thanks a lot guys.

 
If MQL5 VPS is using the same trading account with your MT4 laptop's Metatrader so - yes, it will be opened twice.
 

to make it shorter (very short explanation about MQL5 VPS) -

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vps not working

Sergey Golubev, 2018.11.24 18:01

MQL5 VPS is the copy of your Metatrader in the cloud.
To make this copy of your Metatrader in cloud so you need to open chart (or charts) and attach your EA to the chart (or to the charts) to ready to trade.
After that - you make the migration: you are synchronizing your Metatrader with open charts with EA attached to the charts - with the copy of your Metatrader in the cloud (with MQL5 VPS).

Once you synchronized (once you sent everything to VPS) so you can close your pc (in you want): your EA will work on VPS (means: your EA will work on the copy of your Metatrader in cloud).

And all those actions (with possibe errors) are written in your VPS log files (you can check it inside your home Metatrader).

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To make it shorter:

  • Your MQL5 VPS = your "2nd Metatrader in cloud". I mean: there is the cloud (somewhere). And there is "your second Metatrader" there ... this "second Metatrader in cloud" is empty ... you will need to provide migration/synchronize.
  • Migration = sending your EAs/indicators/open charts from your home Metatrader to MQL5 VPS (to "your Metatrader in cloud").
  • You can synchronize the settings/open charts/EAs/settings of your EAs/changing the settings of your EA/opened charts - from your home Metatrader with MQL5 VPS (with "your Metatrader in cloud"). You can synchronize many time (as many as you want).
  • Only open chart(s) with attached EA(s) can be migrated (can be synchronized) from your home Metatrader to MQL5 VPS (to "your Metatrader in cloud").
  • Your EA(s) will work on MQL5 VPS (on "your 2nd Metatrader in cloud"), and you can close your home Metatrader, or use your home Metatrader with the other trading account, or any.
  • Autotrading is always On in MQL5 VPS ("your second Metatrader in cloud" is having autotrading to be always ON irrespective of the settings of your home Metatrader).
  • (limitation) Your EA will not work on MQL5 VPS (on "your 2nd Metatrader in cloud") if EA is using dll irrespective off -  you allowed dll or not in your home Metatrader (irrespective of the settings of your home Metatrader). It is necessary to see the code or to be a coder to know: your EA is using/calling dll or not).
  • (limitation) It must be 64-bit client terminal (MT5) to use virtual hosting - means: your home Metatrader 5 should be 64-bit.
    MT4 does not have this limitation (because MT4 is always on 32-bit).

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VPS in MT5

MetaQuotes Software Corp. , 2019.11.25 09:50

VPS is also not supported in 32 bit versions of MetaTrader 5.

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