How-To Geek on MSN

How to use the MAP function in Microsoft Excel

Use MAP and LAMBDA to build centralized, error-proof, and auto-spilling Excel spreadsheet systems.
How-To Geek on MSN

Excel's UNIQUE function can't skip columns—unless you use this trick

Nest CHOOSECOLS inside UNIQUE to extract non-adjacent columns, and use INDIRECT for interactive header dropdowns.

Microsoft January 2026 Patch Tuesday fixes 3 zero-days, 114 flaws

Today is Microsoft' 2026 Patch Tuesday with security updates for 114 flaws, including one actively exploited and two publicly ...

17 New Excel Features for 2026 to Speed up Your Work

Discover 17 new Excel features and functions for 2026, so you track edits and data faster. Including auto-refreshing pivots ...

Excel not recognizing functions after reboot

If Excel is not recognizing functions after reboot, change calculation settings, disable Show Formula, run Excel Troubleshooter, etc.

Build Faster Excel Workflows Using FILTER, IFS, XLOOKUP, and LET for Real-World Data

Learn the difference between Excel COUNT and COUNTA, plus TEXTBEFORE and TEXTAFTER tricks, so you clean text and totals with confidence.

I won the Microsoft Excel World Championship. Here's what every office worker should know about Excel.

Diarmuid Early won first place in the 2025 Microsoft Excel World Championship. He has some pointers for using Excel at work.
IEEE

Zero-error Function Computation on a Directed Acyclic Network

Abstract: We study the rate region of variable-length source-network codes that are used to compute a function of messages observed over a network. The particular network considered here is the ...