How to import a CSV file into MT4 step by step

There's the problem! MT4 doesn't want to know any headers. That completely blocks it.

Also check if the dates have zeros in front, type 02 instead of 2. MT4 is very picky with that.

Don't give up, this happens to the most advanced. It took me a whole weekend to properly import a single file.

Thanks for the encouragement. I already tried everything, I think I will create a script in MT4 that reads line by line and matters it as ticks.

Someone already did that. Search the Tick Data Suite forum or some MQL4 script to import ticks from CSV.

Sometimes the easiest thing is to open the CSV in Excel, copy everything and paste it directly into a clean .hst file. But you need to know what is being done.

Best solution: download historical data from Dukascopy and use the converter they offer themselves. Everything is ready.

I tried Dukascopy, but the data comes in .bi5. I had to look for a special decompressor just to be able to open them.

Sure, but there are tools like JForex or Dukascopy's Data Downloader that convert you directly to CSV.

I am impressed by the amount of complications a text file can generate. MT4 is a dinosaur.