How to Fix Division 2 Delta 3 Error Code

Some Division 2 players are getting disconnected every couple of minutes with the error code Delta-03. This problem is reported to occur on both PC and consoles (Playstation 4 and Xbox One).

Division 2 Delta 3 Error Code

As it turns out, there are several different causes that might be causing this particular issue on PCs and consoles:

  • Common TCP / IP inconsistency – One of the most common instances that will cause this problem is a fairly typical TCP / IP inconsistency that might appear due to multiple causes. In this case, you should be able to fix the problem either by refreshing the current network or by performing a router restart.
  • 3rd party security suite interference – As it turns out, this problem can also be caused by an overprotective antivirus or firewall. If this scenario is applicable, you should be able to fix this problem by disabling the real-time protection or by uninstalling the security program altogether (if you’re using a 3rd party firewall)
  • DNS Inconsistency – A DNS assigned from a bad range can also be the main cause facilitating this error code with Destiny 2. In this case, there are two ways to fix it. You can either flush the current DNS and force your ISP to renew the IP /TCP configuration from an elevated Command Prompt or you can make the switch to the DNS provided by Google.
  • NAT is closed – Another common cause that might trigger this error is an instance where your network NAT is closed. This will end up preventing your computer from being able to maintain stable connections with external game servers. In this case, you should be able to fix the issue either by enabling UPnP or by forwarding the ports required by Destiny 2 manually in case UPnP is not supported.

Method 1: Reboot or Reset Router

One of the most common instances that will trigger this error is network inconsistency. And after investigating this particular issue, it turns out that the vast majority of network inconsistencies related to Division 2 are in actuality caused by routers.

In most cases, affected users are actually dealing with some type of TCP / IP inconsistency that ends up breaking the connection with the Destiny 2 server. This problem is much more common with low-tier routers with a limited bandwidth that is tasked with maintaining a connection where multiple devices are connected to the same network at the same time.

In case this scenario seems like it could be applicable, start this troubleshooting guide by disconnecting every non-essential device (to the game connection) and see if the random Delta 3 disconnects stop.

In case the problem is still not resolved, consider following one of the two sub-guides below to either reboot or reset your router connection.

Note: If you want to avoid any data loss, our recommendation is to start with a simple router restart and then move forward with the restart procedure in case the problem is still not resolved.

A. Restarting your Router

A quick router restart will clear almost every inconsistency that is being facilitated by some type of temporary data affecting the TCP / IP connection. This fix has been confirmed to work by a lot of users that were previously encountering the Delta-03 error code.

To perform a router restart, look to the rear of your router and press the On-Off button once to cut off power. Next, press the power button once to cut off the power to your router, then physically disconnect the power cable and wait for a full minute or so to ensure that the power capacitors of your router are completely drained.

Rebooting Router

Once you have successfully restarted your router and re-initiated your network, wait until internet access is re-established and then repeat the action in Division 2 that was previously causing the Delta-03 error code.

If the problem is still occurring, move down to the next sub-guide below to perform a router reset.

B. Resetting your Router

If the simple router reboot didn’t work for you, chances are you’re dealing with a more serious network inconsistency that cannot be resolved by a simple network reset. But since there are a lot of different causes that might be responsible for the apparition of this error, the most efficient way of fixing the majority of persisting network problems is to reset your router back to its factory values.

This will end up fixing the issue in instances where the problem is being caused by some type of modification that you previously operated from your router settings.

Important: Keep in mind that going forward with this method also means that you will clear any custom settings that you have previously established. This includes any previously forwarded ports, whitelisted devices, blocked devices, custom login credentials, and everything else that you adjusted in your router settings since you set the network up.

If you understand the consequences and you want to move forward with this method, you can initiate this operation by pressing and holding on the reset button for 10 seconds or more, or until you see every front LED flashing at the same time.

reset
The reset button for the router

You will be able to find the reset button on the back of your router, but in most cases, you will need a sharp object like a small screwdriver or a toothpick in order to reach the button.

If the connection provided by your ISP is PPoE (Point-to-Point Protocol over Internet)you’ll need to keep your ISP credentials at the ready since you’ll likely need to set up the connection again once the reset procedure is complete.

Once you manage to reset your router successfully and Internet access is established, repeat the action inside Division 2 and see if the problem is now resolved.

If the same problem is still occurring, move down to the next potential fix below.

Method 2: Disabling / Uninstalling 3rd party Security Suite

If you’re using a 3rd party security suite or firewall, it’s possible then a false positive is actually making it terminating the connection with the game server.

This problem is confirmed to occur by affected users with both 3rd party firewalls and 3rd party security suites.

In case you’re using a 3rd party firewall, the fix is as simple as ensuring that the security suite is disabled whenever you’re actively playing the game. Most 3rd party suites will allow you to do this directly from the tray-icon of the security suite. Simply right-click on it and look for an option that allows you to disable the real-time protection.

Disable Antivirus

However, in case you’re using a 3rd party firewall, disabling the 3rd party suite will likely not be enough since the same security suite will remain in place even after you disable the security measure.

In this case, the only viable fix is to uninstall the allegedly overprotective firewall to determine whether it’s interfering with the game or not. If this turned out to be true, you can then look for specific instructions on whitelisting executables and ports used by Division 2 in your antivirus.

If this scenario is applicable, follow the instructions below to uninstall the 3rd party firewall and see if this fixes the problem in your case:

  1. Press Windows key + R to open up a Run dialog box. Next, type ‘appwiz.cpl’ and press Enter to open up the Programs and Features menu.
    Type appwiz.cpl and Press Enter to Open Installed Programs List
  2. Once you’re inside the Programs and Files menu, scroll down through the list of installed applications and locate the 3rd party firewall suite that you want to uninstall.
  3. When you finally manage to locate it, right-click on the firewall listing and choose Uninstall from the newly appeared context menu.
    Uninstalling your antivirus tool
  4. Next, follow the on-screen prompts to complete the uninstallation, then restart your computer and see if the problem is fixed once the next startup is complete.

In case the same issue is still occurring, move down to the next potential fix below.

Method 3: Flushing / Changing DNS

As it’s been confirmed by several affected users, this problem can also occur due to a Domain Name Address (DNS) inconsistency. This scenario is even more likely if you’re encountering similar errors with other multiplayer games.

If this scenario is applicable, there’s a chance that your ISP has assigned a bad DNS address that makes it hard for your computer to maintain connections with certain multiplayer games.

In this case, you can resolve the issue in 2 different ways – you can either flush the DNS and then fore an IP / TCP renewal from an elevated CMD prompt or you can make the switch to the DNS provided by Google to hopefully improved your network reliability.

Start with sub guide A (Flushing and Renewing your DNS) and see if it ends up fixing the Delta-03 error in Division 2. If the same problem is still appearing, move over to sub guide B (making the switch to the DNS provided by Google.

A. Flushing & Renewing the DNS

  1. Press Windows key + R to open up a Run dialog box. Next, type ‘cmd’ and press Ctrl + Shift + Enter to open up an elevated Command Prompt. When you’re prompted by the User Account Control (UAC), click Yes to grant admin access.
    Opening the Command Prompt
  2. Inside the elevated Command Prompt, type the following command and press Enter to flush the current DNS:
    ipconfig /flushdns
  3. Next, type the following command and hit Enter once again to renew the IP configuration:
     ipconfig /renew
  4. Once the IP has been renewed, you can close the elevated Command prompt and launch Division 2 to see if the problem is now resolved.
  5. In case the same problem is still occurring, move down to the next potential fix below.

B. Switching to Google DNS

  1. Press Windows key + R to open up a Run dialog box. Next, type ‘ncpa.cpl’ and press Enter to open up the Network Connections menu.
    Run this in the Run dialog box
  2. Once you’re inside the Network Connections menu, go ahead and right-click on the network that you’re actively using. In case you’re currently connected to a wireless network, right-click on Wireless Network Connection (Wi-Fi), then click on Properties from the context menu that just appeared.
    Note: In case you are connected via a wired cable, right-click on Ethernet (Local Area Connection) instead.
  3. After you are finally inside the Properties window, go ahead and click on the Networking tab from the menu at the top. Next, go to the module named This connection uses the following items and select Internet Protocol Version 4 (TCP / IPv4) and click on the Properties button.
  4. Once you get to the next screen, click on the General tab, then enable the toggle associated with Use the following DNS server address. Next, go ahead and replace the Preference DNS Server and Alternate DNS server with the following values:
    8.8.8.8
    8.8.4.4
  5. After the values have been adjusted accordingly for TCP / IPV4, do the same thing with Internet Protocol Version 6 (TCP / IPv6) and make sure you use the following values instead:
    2001:4860:4860::8888
    2001:4860:4860::8844
  6. Once you have successfully made and saved the changes, you have successfully made the switch to the DNS provided by Google.
  7. In this case, open Division 2 again and see if the problem is now resolved.
Setting Google’s DNS

In case the same problem is still occurring, move down to the next potential fix below.

Method 4: Forwarding the Ports used by Division 2

If none of the methods above have worked for you, chances are you’re dealing with a closed NAT (Name Address Translation) that is preventing your endpoint computer from connecting to the game server.

In this case, you have two ways forward – You can either enable UPnP (Universal Plug and Play) or you can forward the ports used by Division 2 manually. What this essentially does is allowed your router to automatically forward the ports that are being used by trusted games and applications that your devices are attempting to connect to.

Enabling UPnP from your Router settings

This is certainly the preferred approach, but not every router model will support this feature. In case you’re using an older router that doesn’t support UPNP, the only way of getting this issue resolved is to forward the required ports manually. Here’s a quick guide on how to do this:

Note: These steps are only for orientation purposes as the exact screens you’ll see will vary depending on your router manufacturer. But generally, the steps of reaching the Port forwarding screen are very similar across the majority of manufacturers.

  1. Open up your default browser and type your router address directly into the navigation bar and press Enter to access your router settings:
    192.168.1.1
    192.168.0.1

    Note: In the vast majority of cases, one of these 2 addresses should allow accessing your router settings. But in case you have previously established a custom network address for your router, here’s how to find the IP address of your router from any device.

  2. Once you arrive inside the initial login screen, type the custom credentials if you previously established any. In case it’s the first time you get to this screen, try out the default credentials that most router manufacturers use – admin or 1234 (for both admin and password).
    Accessing your router settings
  3. Once you are inside your router settings, look for a way to access the Advanced (Expert) menu, and see if you can spot an option named NAT Forwarding or Port Forwarding.
    Adding ports to the Forwarding list
  4. Once you get to the port forwarding screen, go ahead and forward the following ports that Destiny 2 uses on PC, PS4 and Xbox One:
    TCP: 13000, 27015, 51000, 55000, 55002
    UDP: 22000-22032
  5. Once the ports are successfully forwarded, open Division 2 again and see if the random disconnects are still occurring.

Kevin Arrows


Kevin is a dynamic and self-motivated information technology professional, with a Thorough knowledge of all facets pertaining to network infrastructure design, implementation and administration. Superior record of delivering simultaneous large-scale mission critical projects on time and under budget.

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How to Fix Division 2 Delta 3 Error Code

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