6 Ways to Fix the Umamusume Connection Error 390, 501, and 102 on a Windows PC

Many Umamusume Pretty Derby players have reported connection errors with the 390, 501, and 102 codes. For example, one player said this: “I was playing [Umamusume] normally like 10 minutes ago, and all of a sudden I started having a connection error. I logged back in, and no matter what I do, after a couple of minutes, I get kicked out again and again.” Those connection errors can arise when playing Umamusume or starting it. This is how you can fix the Umamusume connection error 390, 501, and 102 on PCs.

Select the Repair Data Option

Selecting the Repair Data has fixed the Umamusume connection error for some players. That is a troubleshooting option within the launcher window for the Umamusume game. You can select the Umamusume option like this:

1. Start your Umamusume Pretty Derby game.
2. Click the menu (three-line) button within the launcher window.
3. Then, click on the Repair Data option.
4. Select OK to confirm.
   
   

   The Repair Data option

5. Restart the Umamusume Pretty Derby thereafter.

Download All Data

Players also confirm they’ve fixed the Umamusume connection error 390 by selecting the Download All option for Umamusume Pretty Derby. Go through steps one and two of resolution one above and click Download All to select that option. Then, restart your Umamusume Pretty Derby game.

Run Umamusume With Admin Rights From Its Installation Folder

Some players say they’ve fixed the Umamusume connection error by running the game with admin rights. You can also try starting it from its installation folder while you’re at it. These are the steps for running Umamusume with administrator rights:

1. Navigate to the Program Files (x86) > Steam > steamapps > common > Umamusume folder in File Explorer.
2. Right-click the UmamusumePrettyDerby.exe file to select the Properties option for that game.
3. Click on Run this program as an administrator to place a checkmark in the box for that setting.
4. To save the settings as configured, click Apply and OK.
   
   

   The Compatibility tab

5. Double-click the UmamusumePrettyDerby.exe to start the game from its installation directory.

Disable VPNs

Is VPN software installed on your PC? If so, try disabling that VPN connection before starting your Umamusume game. Turn off your VPN with its built-in settings by right-clicking its system tray icon and selecting a disable or disconnect option for it.

Execute Commands for Network Troubleshooting

Executing network troubleshooting commands, such as flushdns and winsock reset, has fixed the Umamusume connection error for some players. There are four network troubleshooting commands that you can execute to apply this potential fix. You can execute those commands like this:

1. First, hold the Windows logo key and press S to activate the search tool.
2. Enter the keyword Command Prompt into the file finder box.
3. Click on the Command Prompt with the right mouse’s right button to select a Run as administrator option for that app.
4. Enter each of these separate commands into the Prompt’s window, pressing Return after each:

   ipconfig /release
   ipconfig /renew
   ipconfig /flushdns
   netsch winsock reset

The flush DNS command

Set a Google DNS Server Address

Your PC’s default DNS might not provide an especially reliable game server path for Umamusume. To address that potential Umamusume connection error, set an alternative Google DNS. Go through the steps below to set a Google DNS:

1. Open Run (which has a Windows logo + R keyboard shortcut) and enter ncpa.cpl in its text box.
2. Click OK to view the Network Connections window.
3. Double-click the Internet Protocol Version 4 checkbox label.
4. To activate more DNS settings, click on Use the following DNS server addresses.
5. Next, input a preferred DNS server address of 8.8.8.8.
6. Enter an alternative DNS server address for Google of 8.8.4.4.
   
   
   

   The DNS settings

7. Select OK in the Internet Protocol Version 4 window.

The troubleshooting methods covered here are among the more widely confirmed ways to fix the Umamusume connection error with the code 390, 501, or 102. Although that error message has different codes, the potential fixes for them are the same. You can also ask the Umamusume support service for more possible fixes from this contact page.