Common challenges businesses face with Excel include managing large datasets, slow performance, complex formulas prone to errors, and lack of automation. Microsoft Excel consultants address these issues by optimizing spreadsheet structures, using Power Query and Power Pivot for efficient data handling, and streamlining complex formulas into more manageable components. They automate repetitive tasks with VBA macros, reducing manual work and errors. Consultants also provide training to improve users’ proficiency in advanced Excel features. By implementing best practices and custom solutions, Excel consultants help businesses overcome these challenges, leading to more efficient data management and better decision-making.