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Bug "Unable to login: RuneMate is not supported on 32-bit Windows" on a 64-bit system

Joined
Jun 20, 2025
Messages
2
Hi,

I'm getting the error "Unable to login: RuneMate is not supported on 32-bit Windows systems" but my system is 64-bit. RuneMate's own debug log confirms it detects the correct architecture:

Operating System: Windows 11 amd64
Java Version: 17.0.18 x64 (Eclipse Adoptium)
Max Heap: 3988MB

The SSO login succeeds, but immediately after, the server returns the 32-bit error. I've tried:

- Fresh install of RuneMate (clean uninstall, deleted all data in C:\Users\User\RuneMate, cleared Gradle cache)
- Both standalone RuneMate client AND Gradle runClient (same error)
- Verified all Java installations are 64-bit
- Confirmed no Windows compatibility mode flags are set
- System: AMD Ryzen 5 7500F, Windows 11 64-bit, AMD64 architecture

The client correctly reports amd64/x64 in its own log, so this appears to be a server-side issue. The error occurs after successful SSO authentication.

Log excerpt:
20:57:33 [DEBUG] Operating System: Windows 11 amd64
20:57:33 [DEBUG] Version: 17.0.18 x64 (Eclipse Adoptium)
20:59:17 [INFO] Logged in to RuneMate SSO
20:59:17 [INFO] Unable to login: RuneMate is not supported on 32-bit Windows systems.

RuneMate Version: 4.17.9
Username: wigglewarm

Any help would be appreciated. Thank you!
 
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