In this article, we will explore the 501 error that pops up in Umamusume Pretty Derby and how you can get rid of it on PC.

If you have been playing Umamusume Pretty Derby via the DMM Game Player (Japanese version) and are now switching to the Steam version, you are likely to encounter the 501 error. This emerges as a common issue that many people are facing. However, it can be simply resolved using a few workarounds.
While there are multiple workarounds available on the internet that require you to delete either the Steam version or the DMM version, we have mentioned a way you will be able to keep both versions intact.
Also Read: How To Potentially Fix Umamusume: Pretty Derby Stuck on Loading Screen Error on PC
Umamusume Pretty Derby: How to Fix the 501 Error Code

Since you have a DMM version installed and are now trying to play Umamusume via Steam, the presence of two game folders is the reason why you are facing this issue. To get rid of this issue, follow these steps:
- Go to this location -C:\Users\YourName\AppData\LocalLow\Cygames
- Copy all the files from here and paste them somewhere else. (to keep a copy) You will have to remove every file from this location.
- Hold the Shift button, and click the right-click button of your mouse. From the menu that opens up, select ‘Open PowerShell window here.’
- Paste this command- ‘fsutil.exe file setCaseSensitiveInfo {path to your \locallow\Cygames} enable. If you get an error: Enable-WindowsOptionalFeature -Online -FeatureName Microsoft-Windows-Subsystem-Linux/
- Now, you need to replace a specific part of the above-mentioned command with the destination of your Umamusume save file location. So cut this part of the command- ‘{path to your \locallow\Cygames} ‘ and paste this- ‘C:\Users\YourName\AppData\LocalLow\Cygames’
- Once this is done, you can again move all the files that you copied in the second step back to the original location (Cygames folder).
Read More: Umamusume Pretty Derby: Potential Fixes for Controller Not Working Error
After you follow all these steps, open Steam again and boot up Umamusume Pretty Derby. With the 501 error out of the way, you can finally enjoy playing the game.

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