When you see the #VALUE error, it means that there is something wrong with the way the formula is typed, or there is something wrong with the cells you are referencing.

Excel can solve for unknown variables, either for a single cell with Goal Seek or multiple cells with Solver.

Excel can throw up various Data type Refresh errors. This post explains each and shows how to fix COULDN'T REFRESH DATA TYPES errors.

Fix the "Retrieving Data. Wait a Few Seconds" error in Microsoft Excel with these effective solutions, including deactivating browser extensions, clearing cookies ...