Comprehensive technical database for Microsoft Excel troubleshooting and productivity. Resolve complex formula errors, master advanced functions, and streamline your spreadsheet tasks with professional, data-driven documentation.
You see a #NUM! error in your Excel cell when a formula cannot calculate a valid number. This error appears because a calculation produces a result outside Excel’s acceptable range or uses invalid inputs. Common causes include impossible math operations like taking the square root of a negative number. This article explains the specific reasons … Read more
The #CALC! error appears when Excel’s dynamic array formulas cannot calculate a result. This error is specific to formulas that use spill ranges, like FILTER, SEQUENCE, or UNIQUE. It indicates a problem with the formula’s logic or its calculation environment. This article explains the common causes and provides steps to resolve the #CALC! error. Key … Read more
You see a cell filled with hash symbols instead of your data. This is a common formatting error in Excel. The problem occurs when a column is too narrow or when a formula results in a negative time or date. This article explains how to widen columns and correct negative time calculations to display your … Read more
A circular reference error occurs when a formula refers to its own cell, either directly or through a chain of other formulas. This creates an endless calculation loop that Excel cannot resolve. The error stops many automatic calculations and displays a warning message. This article explains how to locate the problematic cell and break the … Read more
You see a #SPILL! error when a dynamic array formula cannot display its results. This happens because something is blocking the cells where the results need to appear. The error prevents your formula from calculating correctly. This article explains why the spill range gets blocked and provides clear steps to clear the obstruction. Key Takeaways: … Read more
You type a formula into an Excel cell, but it displays as plain text instead of calculating a result. This happens when Excel interprets the cell’s content as a text string, not a command to execute. The most common cause is the cell being formatted as Text, which prevents formula evaluation. This article explains how … Read more
You have tried to unhide rows or columns in Excel, but they remain invisible. The standard methods like selecting adjacent cells and choosing Unhide do not work. This happens when rows or columns are set to a height or width of zero, not just hidden. This article explains the cause and provides the steps to … Read more
Excel may stop responding on Windows 11, freezing your work and preventing you from saving. This is often caused by conflicts with add-ins, outdated software, or system resource issues. This article provides clear steps to diagnose and resolve the ‘Not Responding’ error in Microsoft Excel. Key Takeaways: Fixing Excel Not Responding Safe Mode for Excel: … Read more
You need to find information from a large table in Excel. Manually searching is slow and error-prone. The VLOOKUP function automates this search across columns. This guide will show you how to use VLOOKUP to find data quickly and accurately. Key Takeaways: How VLOOKUP Works VLOOKUP(lookup_value, table_array, col_index_num, [range_lookup]): This is the full function syntax … Read more
Excel’s AutoFill feature stops working when you drag the fill handle. This prevents you from quickly copying formulas or completing data series. The problem is often caused by a disabled setting or an unrecognized data pattern. This article explains the technical causes and provides step-by-step fixes to restore AutoFill functionality. Key Takeaways: Restoring Excel AutoFill … Read more