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Gurobi Help Center
Knowledge Base
Common Error Messages

Common Error Messages

Resolving error messages

Errors when running grbgetkey

grbgetkey: command not found
Communication failed
ERROR 303: hostname not recognized as belonging to an academic domain
ERROR 405: Cannot reinstall license

Errors when running Gurobi

Error 10024: Web license service only available for container environments
ERROR 10009: License is for 8 cores, machine has xx
ERROR 10009: HostID mismatch
ERROR 10020: Objective Q not PSD and ERROR 10021: Quadratic equality constraints
Error code 20000 when using user cuts

Errors when using APIs

KeyError: 'Missing constraint index'
NoClassDefFoundError
BadImageFormatException
ImportError: DLL load failed while importing gurobipy
RStudio: Gurobi library not found

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Error with Cloud and Cluster manager

How do I resolve the error 'Access to This Operation Is Not Allowed' while using Gurobi Instant Cloud?
Error: Job queueing feature is disabled
No compatible runtime available for version X.X.X
Cluster Manager "Unauthorized access"

Gurobi Optimization