Connection Lost to the Ninja trader Historical data server

[eldanoft]

For a few weeks now I have not been able to see the historical data of Ninja Trader, nor can I even download it. The log tells me from the beginning that the connection to the historical data server was lost. I have already tried deleting the ipconfig cache, reinstalled NinjaTrader by deleting its folder in Documents, tried the same solutions from my second computer, and there is no way to connect to the historical data server. I have tried with new simulation accounts and it does not work either.

I can connect to the accounts, whether they are evaluation accounts or simulation accounts, but they do not load the graphics because there is no connection to the HDS.

[NinjaTrader_Erick]

Hello eldanoft ,

Thank you for your post.

First, I am seeing you are on a previous version of NT8. I would recommend you update to eliminate possible version variables (if you do not wish to update the latest release)

To update to the latest version 8.1.3.1 of NinjaTrader Desktop please follow the steps below.

• Login into the NinjaTrader Account Dashboard
• Click "Download" in the bottom left-hand corner of the sidebar
• Next select "Download" in the "Most Recent Release" Window in the main screen
• Once the installation had downloaded, ensure any previous version of NinjaTrader is closed before running the installation package.
  • Note: You may need to locate this in your "Downloads" folder in a Windows File Explorer

After the installation package is completed, launch NT8, and if you still experience connection issues to the data servers:


This most commonly occurs when NinjaTrader is unable to communicate with the servers due to it being blocked by another program, or there is an issue in the path between your computer and the appropriate servers.
]
Please check for software such as (corporate) firewalls, spyware and anti-virus software that could be blocking NinjaTrader.
In some cases the modem/router has built-in software that prevents the connection to be established.

It is common with a software update, for Windows Defender to block the app again, so please make sure exceptions for NT8 are added to any anti-virus or firewall you may have.

To resolve this, I recommend the following steps (test for the issue after each step):

• Restart your modem and (if applicable) router
• Restart your PC
• Also, ensure that your computer is not turning off your Network Adapter to conserve power:
  • Restart NinjaTrader
  • Right-click on your Start button
  • Select 'Device Manager'
  • Expand 'Network Adapters'
  • Right-click on your Network Adapter and select Properties > Power Management
  • Uncheck 'Allow the computer to turn off this device to save power' option
  • Click 'OK' to save the changes
  • Do this for all Network Adapters
• Clear your DNS
  • Open the Command Prompt
  • In the command prompt, run this command: ipconfig /flushdns
• If you are using a VPN, please turn it off and try connecting again.
• Try a mobile Hotspot if available
• If you are not already and the option is available to you, connect to the internet using an ethernet cable. Wireless connections are significantly more unreliable.
• Ensure exceptions have been added into any firewall/antivirus/backup programs for these folders:
  • C:\Users\<your username>\Documents\NinjaTrader 8
  • C:\Program Files \NinjaTrader 8
• If the above steps do not help, contact your ISP and let them know you are experiencing a highly unstable connection. An issue of connectivity may exist on their end.

Please let me know if you are still experiencing the same after following these steps.

[eldanoft]

Hello eldanoft ,

Thank you for your post.

First, I am seeing you are on a previous version of NT8. I would recommend you update to eliminate possible version variables (if you do not wish to update the latest release)

To update to the latest version 8.1.3.1 of NinjaTrader Desktop please follow the steps below.

• Login into the NinjaTrader Account Dashboard
• Click "Download" in the bottom left-hand corner of the sidebar
• Next select "Download" in the "Most Recent Release" Window in the main screen
• Once the installation had downloaded, ensure any previous version of NinjaTrader is closed before running the installation package.
  • Note: You may need to locate this in your "Downloads" folder in a Windows File Explorer

After the installation package is completed, launch NT8, and if you still experience connection issues to the data servers:


This most commonly occurs when NinjaTrader is unable to communicate with the servers due to it being blocked by another program, or there is an issue in the path between your computer and the appropriate servers.
]
Please check for software such as (corporate) firewalls, spyware and anti-virus software that could be blocking NinjaTrader.
In some cases the modem/router has built-in software that prevents the connection to be established.

It is common with a software update, for Windows Defender to block the app again, so please make sure exceptions for NT8 are added to any anti-virus or firewall you may have.

To resolve this, I recommend the following steps (test for the issue after each step):

• Restart your modem and (if applicable) router
• Restart your PC
• Also, ensure that your computer is not turning off your Network Adapter to conserve power:
  • Restart NinjaTrader
  • Right-click on your Start button
  • Select 'Device Manager'
  • Expand 'Network Adapters'
  • Right-click on your Network Adapter and select Properties > Power Management
  • Uncheck 'Allow the computer to turn off this device to save power' option
  • Click 'OK' to save the changes
  • Do this for all Network Adapters
• Clear your DNS
  • Open the Command Prompt
  • In the command prompt, run this command: ipconfig /flushdns
• If you are using a VPN, please turn it off and try connecting again.
• Try a mobile Hotspot if available
• If you are not already and the option is available to you, connect to the internet using an ethernet cable. Wireless connections are significantly more unreliable.
• Ensure exceptions have been added into any firewall/antivirus/backup programs for these folders:
  • C:\Users\<your username>\Documents\NinjaTrader 8
  • C:\Program Files \NinjaTrader 8
• If the above steps do not help, contact your ISP and let them know you are experiencing a highly unstable connection. An issue of connectivity may exist on their end.

Please let me know if you are still experiencing the same after following these steps.

Greetings Erick, I have tried everything you have told me and the problem persists, is there any other solution? Thanks

[backtester831]

For a few weeks now I have not been able to see the historical data of Ninja Trader, nor can I even download it. The log tells me from the beginning that the connection to the historical data server was lost. I have already tried deleting the ipconfig cache, reinstalled NinjaTrader by deleting its folder in Documents, tried the same solutions from my second computer, and there is no way to connect to the historical data server. I have tried with new simulation accounts and it does not work either.

I can connect to the accounts, whether they are evaluation accounts or simulation accounts, but they do not load the graphics because there is no connection to the HDS.

Years ago I had a similar problem too, I don't know if it was my internet or wifi or what, but I was able to fix it by signing up for NinjaMobileTrader VPS and running the NinjaTrader on there. It's never lost a NinjaTrader historical data connection since and all my charts are running smoothly. If you're having a problem with both of your computers, then it's likely your internet like it was mine.

[QuantVPS]

Are you running this on a local PC at home?

Our servers are located in institutional-grade data centers (network and power redundancies) and run 24/7.

Check out www.QuantVPS.com

[aligator]

Please let me know if you are still experiencing the same after following these steps.

Hi NinjaTrader_Erick ,

I have a similar issue, however, a little different:

I use Market Analyzer to scan watch lists based on some indicator criteria. I have no issues if I scan a watch list of 10-20 items, although a little slow, but scan works fine and finishes (Calculate either On Bar Close or On Price Change).

However, if the size of the watch list is relatively large, i.e. SP100 or SP500, Market Analyzer takes a very longtime, sometimes few hours, to finish or just freezes indicating 'Loading'. The Log file indicates frequent attempts and disconnects to Historical Data Server (Kinetick - End Of Day (Free) in this case) connection.

This problem started recently, although I have gone through all of your suggested steps above, except that I am still on NT 8.0.27.1.

My PC and wireless are top notch and are reset and sync every day before market opens. It seems to me that the issue maybe on the server side or there is a certain capacity or limitation on servers that relatively large size (> 10-20 items) watch lists cannot be handled efficiently in Market Analyzer and the connection goes into On/Off mode or freezes.

Any Idea?

Thanks.

[NinjaTrader_Clayton]

Hello Aligator,

Thank you for the message.

Does the Market Analyzer window use:

• Any 3rd party or Order Flow + Columns?
• Or, have multiple Tick based calcluations happening?
  • If so, the increase in instrument list size could just be an increased amount of calculations that have to happen.

If you make a workspace with just a Market Analyzer and that list of instruments with just a few basic columns like Last, Ask, and Bid price, does it take forever to load in still?

• If not, then that would imply one of the Columns on the original Market Analyzer is more complex and takes longer to load.

You mention having a top notch PC, however I'm wondering if calculating for that many instruments is a lot on the processing power:

• Open the Windows Task Manager (Press Ctrl + Shift + Esc) > Switch the view to Performance > Click CPU > Right-click the Graph > Change graph to > Select "Logical processors"
• Now, open NinjaTrader and have it load in, how does it affect the CPU performance?
  • Do any of the processors get stuck at 100% usage?
  • I've seen it where if a CPU core gets stuck at 100%, it can start causing the network adapter to fail and lose connection as they both start fighting over the processing power and ability to function in real-time.
  • 

Please let us know if we may provide any further assistance.