Last updated on August 29th, 2025 at 12:12 pm
Uma Musume: Pretty Derby players continue to face Error 102, an issue that prevents access to the game. This error often appears during login or after extended play sessions. While it’s mostly tied to server instability, it can also be triggered by local device issues, corrupted data, or VPN conflicts.
This updated 2025 guide provides all possible fixes, known error triggers, and support options to help you get back into the game.
What Is Error 102 in Uma Musume?
Error Code 102 is a general connection failure or data handling error that blocks the game from proceeding past the title screen. It may happen due to:
- Server-side disruptions (common cause)
- Data desynchronization after lengthy gameplay sessions
- Completing specific in-game races or missions (character-linked bugs)
- Unstable Wi-Fi or mobile data connections
- VPN interference or region-blocking conflicts
- Device-level cache, storage, or permission issues
Quick Fix Summary
Here’s a quick overview of the most effective solutions:
| Fix | Difficulty | Works Best For |
|---|---|---|
| Check Server Status | Easy | Everyone |
| Clear Cache & Storage | Easy | Android/iOS |
| Force Stop & Restart | Easy | All devices |
| Repair All Data | Medium | DMM/PC & Mobile |
| Switch Networks (Wi-Fi/Mobile) | Easy | VPN conflicts |
| Delete User Data | High Risk | Linked accounts only |
Step-by-Step Uma Musume Error 102 Fix Guide
1. Check Server Status
Before trying local fixes, verify if the issue is global:
- Visit Uma Musume’s official Twitter or Downdetector
- Look for any maintenance announcements, bug alerts, or server downtime reports
- If servers are down, wait 15–30 minutes before retrying
2. If You Are the Only One Affected
a. Force Stop the Game
- Android: Long-press the app → App Info → Force Stop
- iOS: Swipe up the app from multitasking
b. Clear Cache & Storage
- Go to App Info → Storage → Clear Cache
- If problems persist, try Clear Storage (risk of local data loss if not linked)
c. Allow Full App Permissions
- App Info → Permissions → Enable network and storage
d. Reboot Device
- Clears temporary memory and resets network stack
e. Switch Network Connection
- Toggle between Wi-Fi and Mobile Data
- Disable any VPN services unless set to Japan
VPN conflicts are a frequent cause of Error 102. They can block data downloads or disrupt region-specific connections. Disabling VPN or switching to a Japan-based server often resolves the issue.
3. Advanced Solutions (Use with Caution)
a. Repair or Download All Data
- PC/DMM: Use the “Repair All Data” option
- Mobile: In-game Settings → Download All Assets
- This forces the game to redownload data, which often clears corrupted files causing Error 102
b. Delete User Data (Risky)
- Works only if the account is linked to Twitter, Google, or DMM
- If not linked, data loss is permanent
c. Create a New Account (Temporary Workaround)
- Some users have confirmed that Error 102 only affects their main account
- Logging in with an alternate account can be used as a short-term workaround until a patch is released
Common Causes of Error 102 During Gameplay
Error 102 has been observed in these scenarios:
- After completing Career Mode races
- While using characters like Special Week and Cap
- During Team Stadium battles (as of 2025 player reports)
These patterns suggest that some internal event bugs are still unresolved.
What to Avoid
- Do not delete app data unless your account is linked externally
- Avoid VPNs unless connecting through Japan servers
- Do not force too many repair attempts back-to-back
When to Contact Support
If none of the above works:
| Platform | Support Action |
|---|---|
| DMM (PC) | Use DMM support form |
| Android/iOS | Visit umamusume.jp → Contact Us |
Include:
- Trainer ID
- Description of the issue
- Steps you have already tried
Pro Tips for Uma Musume Gameplay
- Always link your account before reinstalling
- If stuck in a specific mission or race, avoid repeating it until patched
- Stay updated via Twitter, Discord, or Downdetector
- Check community threads for additional troubleshooting methods that may surface before official fixes
FAQs About Uma Musume Error 102
Q. Is Error 102 a server issue or my device?
It can be either. Check server status first; if servers are fine, try local fixes.
Q. Can I fix Error 102 without reinstalling?
Yes. Clearing cache, repairing data, and switching networks often resolve it.
Q. Why does Error 102 keep coming back?
Because it is often linked to unstable networks or in-game bugs that reappear after long sessions.
Q. Does Error 102 affect both mobile and PC versions?
Yes. Error 102 can appear on Android, iOS, and DMM/PC versions of Uma Musume. The root cause is usually the same: server connection issues or corrupted local data.
Q. Will deleting user data always fix Error 102?
Not always. Deleting user data may clear corrupted files, but it is risky. If your account is not linked to Twitter, Google, or DMM, you will lose progress permanently.
Q. How long does Error 102 usually last?
If the issue is server-side, it often resolves within a few hours once maintenance or fixes are applied. If the cause is local, applying the troubleshooting steps in this guide can fix it immediately.
Error 102 in Uma Musume is frustrating, but most cases can be fixed by clearing cache, repairing data, or switching networks. Always link your account before risky steps like reinstalling or deleting user data.
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Updated August 2025: Reports show Error 102 still occurs during long races, but following these steps will help you get back into the game quickly.
