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  1. Gurobi Help Center
  2. Knowledge Base
  3. 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
See all 8 articles

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