Failed to open log file gurobi.log

Awaiting user input

Connor Newman

• January 05, 2022 22:53

My Gurobi interface crashes when I try to open it to enter the free academic license. This indicates it does not have permission to write, but I do not know how to fix this on 64 bit Windows 11

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  Jaromił Najman

  Gurobi Staff

  • January 06, 2022 11:14
  • Edited

  Hi Connor,

  You should try executing Gurobi as administrator. In Windows, you can right click the executable and choose "Run as administrator". If you want to run Gurobi from the command prompt, you should hit the Start button, type "command" or "cmd". You’ll see the Command Prompt icon listed as the main result. Right-click that icon and choose "Run as administrator". From this admin Command Prompt, you should be able to execute Gurobi with all permissions.

  Best regards,
  Jaromił

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  Connor Newman

  • January 06, 2022 15:52

  

  

  

  Hi Jaromil,

  I tried running it as an administrator and the issue continues. The command processor opens for about 4 seconds before closing itself. 

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  Connor Newman

  • January 06, 2022 15:55

  

  

  

  However, when I run as an administrator it does not say "Failed to open log file gurobi.log", the application just crashes. 

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  Jaromił Najman

  Gurobi Staff

  • January 06, 2022 16:43
  • Edited

  Hi Connor,

  Could you share a screenshot of how you are trying to execute Gurobi on your Windows machine? Please note that the default Gurobi icon suggested by Windows is often the Token Server executable, which does only start a Token Server, i.e., it looks like it does nothing.

  Could you please try starting the Command Prompt as administrator and executing gurobi_cl from the Command Prompt, cf., Solving the model using the Gurobi command-line interface?

  Best regards,
  Jaromił

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