MQL4 Market: failed download product [500] - page 6

[Lorentzos Roussos]

Mateus Botelho Mattos:

Yes, demo or paid versions, both with downloading error 500.

Currently release has 713KB, the same as my MT5 release that is working.

Do you know if this size can corrupt MT4 releases at mql5.com ?

I dont know the reason , we can run tests though . Send me a message because we cant discuss products here

[Mateus Botelho Mattos]

Lorentzos Roussos:

I dont know the reason , we can run tests though . Send me a message because we cant discuss products here

I sent you a friend request, to enable me send PM.

If you go to my profile, I have only two products, one MT5 and one MT4, both are similar code, and the MT4 is the one we are talking about.

Thank you in advance for your cooperation.

[Lorentzos Roussos]

Tested the following with @Mateus Botelho Mattos

It still fails . 

1.open data folder
2.close mt4 + editor
3.up one level from MQL4 folder

4.go to config folder
5.delete community config file 
6.go to profiles folder
7.delete "mql4.market.personal.dat"

go to hard drive with windows in it
go to Users folder
enable viewing hidden files
8.Go to your user folder (your name)
9.Go to hidden "AppData" folder
10.Go to Roaming folder
11.Go to MetaQuotes folder
12.Go to Terminal folder

13.if you notice a Community folder ,delete it 

Now , you will notice some weird hash folders 

These are your terminals 
so 
for each one repeat the following process : 

0.Go in the hash folder 
1.if you see an "MQL4" folder stay in hash folder ,if not go up and enter the next hash folder
2.Go to config subfolder 
3.delete community config file
4.go to profiles folder
5.delete "mql4.market.personal.dat"

--loop of actions ends here once you have checked all hash folders .

Now :

1.Start MT4
2.Go to market tab it will take a lot of time to load initially ,so be patient

[Mateus Botelho Mattos]

Lorentzos Roussos:

Tested the following with @Mateus Botelho Mattos

It still fails . 

Hello.

I fixed this issue and will share here my tests and solution.

My EA runs multiple Strategy Sets, some with more than 300 strategies.

To handle all these, the parent Strategy class had more than 600 virtual methods.

The compiled code, both MT5 and MT4, runs fine at my PC and both pass mql5.com validation tests.

Only MT4 version shows error 500 when downloading it at market after published.

After many tries, I realized that with less than 500 virtual methods, the publish step do not broke the EA.

So I decreased my Strategy Sets limit to less than 250 strategies per Set. More Strategy Sets classes don't broke at publish step, so I can have more than 250 strategies using many Strategy Sets classes.

I hope it can clarify this issue.

Thank you a lot for all of you, and special tanks to  Lorentzos Roussos who spent a lot of time making tests with me.

[Lorentzos Roussos]

Mateus Botelho Mattos:

Hello.

I fixed this issue and will share here my tests and solution.

My EA runs multiple Strategy Sets, some with more than 300 strategies.

To handle all these, the parent Strategy class had more than 600 virtual methods.

The compiled code, both MT5 and MT4, runs fine at my PC and both pass mql5.com validation tests.

Only MT4 version shows error 500 when downloading it at market after published.

After many tries, I realized that with less than 500 virtual methods, the publish step do not broke the EA.

So I decreased my Strategy Sets limit to less than 250 strategies per Set. More Strategy Sets classes don't broke at publish step, so I can have more than 250 strategies using many Strategy Sets classes.

I hope this can clarify this issue.

Thank you a lot for all of you, and special tanks to  Lorentzos Roussos who spent a lot of time making tests with me.

It does work indeed . You found it :)
Thanks for the info 

[franck serge]

I uninstalled Mt5 and reinstalled it,

It does not work, I can't download on the market.

***

Can you help me to fix it? Thamk you

[Sergey Golubev]

franck serge #:

I uninstalled Mt5 and reinstalled it,

It does not work, I can't download on the market.

***

Can you help me to fix it? Thamk you

There are a lot of things to check before downloading something from the Market, for example:

• you are using old Windows version or the latest Windows 10 with 64-bit;
• you are using the latest build of Metatrader;
• did you fill Community tab with your forum login and forum password (your forum login is pambeaba; do not use your email for login);
• more.

You can check everything based on the examples from this thread:

This is the thread (first page of the thread) as an example about how to install:
https://www.mql5.com/en/forum/341377

[Flexter]

Hello. I have the same problem. IE has the latest version, MT5 too. All data inputed correctly. Tried to delete all from Community folder - didn't help. Please, help me

[Sergey Golubev]

Flexter #:
Hello. I have the same problem. IE has the latest version, MT5 too. All data inputed correctly. Tried to delete all from Community folder - didn't help. Please, help me

Windows 10 64-bit OS?

Look at my previous post for possible options about what to check,
Besides, make sure that you are not using any external VPS (some external VPS providers were banned from the Market).
And some users reported that the issue (error 500) was fixed by itself when they make all updates for their Windows.