What is Umamusume error code 390?

Hi everyone, I keep getting Umamusume error code 390 when I try to play the game. Can someone explain what Umamusume error code 390 means and how to resolve it?
 
Umamusume error code 390 indicates a connection failure between the game and its servers. It often happens due to unstable internet, VPN usage, region restrictions, or ongoing server maintenance. Players can fix it by checking their connection, disabling VPNs, clearing cache, or waiting until server issues are resolved.
 
Is anyone else running into Umamusume error code 390 today? My game loads halfway and then throws the error and sends me back to the title screen. Internet seems fine on my end.
 
Yeah, I’ve seen Umamusume error code 390 a couple times before. Most of the time it’s just the game failing to connect to the servers properly, especially during peak hours.
 
Same here. I usually get Umamusume error code 390 when my Wi-Fi switches briefly or when the servers are under maintenance. Restarting the app sometimes fixes it.
 
If you’re using a VPN, try turning it off. I kept getting error 390 until I disabled mine, then the game logged in normally.
 
I play on Steam and it happens when Steam goes offline mode randomly. Verifying game files helped me once, but other times I just had to wait it out.
 
From what I’ve seen, error 390 is almost always connection-related, not account-related. When lots of players report it at once, it’s usually on the server side.
 
Clearing cache also helped me when Umamusume error code 390 kept repeating. After that, the game worked fine the next day.
 
Umamusume error code 390 is mainly a server or connection issue. It can be caused by unstable internet, VPNs, Steam issues, or temporary server problems, and most players fix it by restarting, switching networks, or waiting a bit.
 
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