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I am running Excel for Mac 2016. I am working on an optimization problem requiring the use of the Solver add-in. When I click "Solve" in the dialog box containing all my constraints, the error message appearing is: "Another Excel instance is using Solver. Try again later." No other excel workbook is open. Is it possible that Solver is running in the background? I have tried taking out the add-in and putting it back again; I have tried to reboot the computer... How do I solve this issue?
A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.
As per the description it seems the issue is related to the add-in since you have already tried removing and re-installing the add-in you can try to create a new user account and check if it works.
What is the version of Excel installed on the computer?
Install all the latest updates on the computer and verify.