How to backup purchased MT5 indicators without install again from market?

 

As Subject

 

I have no idea what you mean (because purchased MT5 indicators are connected with your operational system as a Windows version for example and with your hardware too) - but I found the following information (hope it helps):

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How to Install an Earlier Purchased Application
https://www.metatrader5.com/en/terminal/help/market_buy
How to Purchase an App - Market App Store - MetaTrader 5 Help
How to Purchase an App - Market App Store - MetaTrader 5 Help
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