Strategy Tester (unexpected end of testing)

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While attempting to test my EA, this message keeps popping up and my test doesn't run. Ive attached an image of the errors, and spent time trying many things to fix it, but nothing seems to work. Thanks for the help 
Files:
question.png  31 kb
 
Tarshish12:
While attempting to test my EA, this message keeps popping up and my test doesn't run. Ive attached an image of the errors, and spent time trying many things to fix it, but nothing seems to work. Thanks for the help 

I see a history synchronization error.

Does your EA code incorporate multiple timeframes or multiple symbols?

 
Tarshish12:
While attempting to test my EA, this message keeps popping up and my test doesn't run. Ive attached an image of the errors, and spent time trying many things to fix it, but nothing seems to work. Thanks for the help 

You will need to give more details :

How to report technical issues?
How to report technical issues?
  • 2023.06.20
  • www.mql5.com
To get good and efficient help you need to provide all the relevant technical informations about your context when using the application (MT5 deskt...
 
Tarshish12:
While attempting to test my EA, this message keeps popping up and my test doesn't run. Ive attached an image of the errors, and spent time trying many things to fix it, but nothing seems to work. Thanks for the help 

I am facing the same issue, did you manage to find solution?

Following are the logs:


2026.01.17 12:03:25.956 XAUUSD: history synchronization started

2026.01.17 12:03:26.314 base file C:\Users\rohit\AppData\Roaming\MetaQuotes\Tester\D7ED78B5721D43771AFED1937E52A4FF\Agent-127.0.0.1-3000\..\bases\MetaQuotes-Demo\history\XAUUSD\2023.hcs open error [3]

2026.01.17 12:03:26.314 XAUUSD: history synchronization error [apply error]

2026.01.17 12:03:26.314 XAUUSD: load 6.63 Mb of history data to synchronize in 0:00:00.357

2026.01.17 12:03:26.314 XAUUSD: history synchronized from 2023.01.03 to 2023.12.29

2026.01.17 12:03:26.314 XAUUSD: history data load error

2026.01.17 12:03:26.315 XAUUSD: there is no history. Please make sure that XAUUSD history is available on the trade server

2026.01.17 12:03:26.315 cannot get history XAUUSD,M1

2026.01.17 12:03:26.315 log file "C:\Users\rohit\AppData\Roaming\MetaQuotes\Tester\D7ED78B5721D43771AFED1937E52A4FF\Agent-127.0.0.1-3000\logs\20260117.log" written


Files:
mt5load.jpg  266 kb
 
rohits8829 #:

I am facing the same issue, did you manage to find solution?

Following are the logs:

...

Please provide details about your computer configuration and MT5 build.

Also what Tester settings are you using ? (dates, modelling mode, etc...)

 
try selecting last month from drop down. If you selected 'every tick based on real tick' then request historical tick and bar first then try test. to do that you can click cntrl + u, while symbol selcted click on bar tab , select date range, then click request. DO same for tick.
 

same error

got the same problem. i can't run the test

i tried these:

1delete data.download again.

2reinsall the newest version

all failed.

My system is win11.

 
Issue confirmed and reported to MQ attention.
 
Alain Verleyen #:

You will need to give more details :

- I've reinstalled MT5, with all updates

- Checked to see that I have more than enough space in my device for any data

- Tried downloading the bar and tick data for the timeframe I wanted to test

- Deleted all vpns to prevent any blockage from that

- Attempted to run mt5 as administrator

- Tried mt5's built in strategies (didn't work)

Files:
ssssss.png  12 kb
 

Forum on trading, automated trading systems and testing trading strategies

All about MT5 updates.

Alain Verleyen, 2025.12.16 22:54

In case you got an BETA update, for whatever reason, and you want to move to the last official release :

  • A Telegram channel has been created, you will always find there the last official release needed exe files.
  • MT5 Terminal is available in several versions according to your CPU capabilities. You can check which version you have to use in the Journal log, at the first entries after you started MT5.

Here my version is AVX2, an other possibility is X64

  • With this information you will know which zip file to download.


  • You then just have to replace your current exe files with the ones from the Zip. If you don't know how to do, then doing this operation is probably not a good idea.

After MT5 is restarted, you will have the last official release.

If you don't want to get beta-build updates again :

  • NEVER connect to MetaQuotes-Demo server.
  • NEVER use MT5 Terminal Help menu=>Check for Updates=>Last Beta Version.

 
Ryan L Johnson #:

I see a history synchronization error.

Does your EA code incorporate multiple timeframes or multiple symbols?

it is designed as a single timeframe EA, and only incorporates one symbol
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