Uplay is one of the most popular gaming platforms that you can play world-renowned games like Tom Clancy’s Rainbow Six Siege, Assasin’s Creed, and more. But players have reported encountering an error Connection lost when trying to play games on Uplay Launcher. If you happened to be one of them, don’t panic. You can definitely fix it by trying some working fixes in this article.

Try these fixes

You may not need to try them all; simply work your way down the list until you find the one that works for you.

  1. Update your network adapter driver
  2. Reset TCP/IP stack
  3. Disable proxy settings
  4. Change your DNS servers settings
  5. Reset your network

Fix 1: Update your network adapter driver

If your network drivers are outdated or faulty, you will encounter connectivity issues. So to fix it, you need to check for updates.

You can manually update your network drivers by going to manufacturers’ official websites to download and install the correct network drivers for your system. This can be time-consuming and you might risk downloading the wrong drivers for your system. So if you’re not comfortable doing it on your own, we recommend using Driver Easy to automatically update your network drivers.

1) Download and install Driver Easy.

2) Run Driver Easy and click the Scan Now button. Driver Easy will then scan your computer and detect any problem drivers. (Any problem drivers can cause issues. So we recommend checking for drivers updates on a regular basis.)

3) Click the Update button next to your network adapter driver to automatically download the correct version of that driver, then you can manually install it (you can do this with the FREE version).

Or click Update All to automatically download and install the correct version of all the drivers that are missing or out of date on your system. (This requires the Pro version which comes with full support and a 30-day money-back guarantee. You’ll be prompted to upgrade when you click Update All.)

update network adapter driver automatically
The Pro version of Driver Easy comes with full technical support. If you need assistance, please contact Driver Easy’s support team at support@drivereasy.com.

After updating your drivers, restart your computer for them to take effects. Then you can open Uplay Launcher to check if it resolves your issue. If not, don’t’ worry. There are few other working fixes for you.


Fix 2: Reset TCP/IP stack

TCP/IP implies a Transmission Control Protocol/Internet Protocol. TCP/IP Reset restores PC’s Internet Protocol settings to the default values and often fixes connection problems. So if you encounter Uplay Connection lost error, you need to reset TCP/IP stack. To do this, follow the steps below:

1) On your keyboard, press the Windows logo key windows logo keyand at the same time to invoke the Run box.

2) Type cmd and press Ctrl + Shift + Enter to open an administrator Command Prompt.

open command prompt

3) Click Yes when a prompt appears asking for the right.

4) Copy and paste the following command and press Enter.

netsh int ip reset c:\resetlog.txt

5) Copy and paste the following command and press Enter.

netsh winsock reset

6) Copy and paste the following command and press Enter.

ipconfig /flushdns

7) Type exit and press Enter.

Now open Uplay Launcher to check if it works. If it doesn’t, move on to the next fix.


Fix 3: Disable proxy settings

Using a proxy may cause connection, installation, or patching issues. So to fix Uplay Connection lost error, you should disable proxy settings. Follow the steps for your operating system below to disable your proxy settings.

1) In the Search bar, type control panel. Click Control Panel from the results.

open control panel

2) Click Network and Internet.

network and Internet

3) Click Internet Options.

Internet Options Control Panel

4) Select the Connections tab. In the Local Area Network (LAN) settings section, click LAN settings.

5) Uncheck Use a proxy server for your LAN. Then click OK.

If this setting is already unchecked, try to toggle Automatically detect settings.

6) Click OK.


Fix 4: Change your DNS servers settings

Changing your DNS can be beneficial a lot of the time because the standard DNS your ISP gives you cannot always be within your expectations. So changing DNS servers settings, especially configuring Google Public DNS addresses would help you resolve some connectivity issues.

Here’s how you can do this:

1) In the bottom right corner of your desktop, right-click on the network icon and select Open Network & Internet settings.

2) In Status tab, scroll down and click Change adapter options.

change adapter options Uplay

3) Right-click on your Wi-Fi and select Properties.

4) Under This connection uses the following items, select Internet Protocol Version 4 (TCP/IPv4). Then click Properties.

5) Select Use the following DNS server addresses:. If there are any IP addresses listed in the Preferred DNS server or Alternate DNS server, write them down for future reference.

Replace those addresses with the IP addresses of the Google DNS servers:

Preferred DNS server: 8.8.8.8
Alternate DNS server: 8.8.4.4

Then click OK to save the changes.

Now follow the steps below to configure Google Public DNS addresses for IPv6 connections.

1) Under This connection uses the following items, select Internet Protocol Version 6 (TCP/IPv6). Then click Properties.

2) Select Use the following DNS server addresses:. If there are any IP addresses listed in the Preferred DNS server or Alternate DNS server, write them down for future reference.

Replace those addresses with the IP addresses of the Google DNS servers:

Preferred DNS server: 2001:4860:4860::8888
Alternate DNS server: 2001:4860:4860::8844

Then click OK to save the changes.

After making these changes, try using Uplay Launcher to check if the error is gone. If this didn’t’ work, you need to reset your network.


Fix 5: Reset your network

The Connection lost error from the Uplay Launcher is an issue related to network connections. When you are troubleshooting it, one of the recommended tips is to reset the network settings. Network reset is a feature that restores all the network-related features and settings to their original values — factory state. So to fix the Connection lost error, you need to do a network reset.

Here’s how you can do this:

1) In the Search bar, type network reset and click Network reset from the results.

reset network

2) Click Reset now.

do a network reset

3) Click Yes.

Now restart your computer and your problem should be fixed.


Hopefully, these fixes can help you get rid of the Connection lost error. If you have any ideas or questions, please leave us a comment below.

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