One Cool Tip Newsletter

February 16, 2026

Your daily dose of tech-savvy brilliance!

😀Greetings!, Happy Monday, Cool Tipper!

Get ready to streamline your digital life with simple, actionable tips delivered straight to your inbox.

Today's Cool Tip Theme: Summarize with Excel and Copilot

IN THIS ISSUE

• 🚨 Urgent Chrome Security Update.
• 🎨 AI Prompt of the Day: 3D Text.
• 🤖 Copilot in Excel.
• 🎯 Trace Precedents.
• ⏳ Stale Value Formatting.
• 🐍 Python in Excel.

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• 😂 Laugh with Us! Enjoy our Tech Joke of the Day, Haiku and Cool Tip Comics.



• 🌐 Stay Informed! Check out ICYMI, and our One Cool Tip Video.

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Today's Tech Trivia

Answer at the end of this newsletter.

🚨 Chrome Zero-Day Alert: Update Immediately 🚨

Google has released an emergency patch for CVE-2026-2441, a serious zero-day vulnerability affecting Chrome’s CSS font value processor.

This flaw allows attackers to execute arbitrary code inside a sandbox via a crafted HTML page, and it’s already being exploited in the wild.

What’s Affected

• Chrome version 145.0.7632.75/76 (Windows & Mac).
• Chrome version 144.0.7559.75 (Linux).
• Other Chromium-based browsers like Microsoft Edge, Vivaldi, Opera, and Brave may also be impacted.

What To Do

Update Chrome immediately:

1. Go to Menu > Help > About Google Chrome.
2. Or type chrome://settings/help in the address bar.
3. Chrome will auto-update if a fix is available..

Microsoft is aware of the issue and working on a patch for Edge.

Until then, avoid suspicious websites and keep browser extensions minimal.

This is the first Chrome zero-day of 2026. Google patched eight such vulnerabilities in 2025, underscoring the importance of timely updates.

Try this Cool AI prompt. Copy and paste to ChatGPT, Gemini or Copilot.

Transform the word [your name] into 3D text made of [object/texture]

Turn Excel Chaos Into Clarity With Copilot’s Summarize And Categorize Superpowers

Copilot in Excel can scan thousands of rows, surface the story in your data, and organize it into meaningful categories with just a few natural language prompts. If you work in spreadsheets all day, this feature is like having a data analyst sitting in the ribbon.

You open a workbook with 18,000 rows of sales data, customer comments, and dates, and your manager wants a one-page summary before lunch. 

You know Excel can do it, but building the right formulas, PivotTables, and filters feels like a project, not a quick task.

Here's a Cool Tip:  Use Copilot to Summarize and Categorize Your Data.

Instead of hunting for the perfect function, you describe what you want: “Summarize this data by category.” 

Copilot reads the table, proposes a summary, and can even build the supporting PivotTable for you.

Excel stops being a wall of cells and starts acting like a conversation about your data.

Feature Explanation

Copilot in Excel is an AI assistant built into Microsoft 365 that understands your spreadsheet as a dataset, not just a grid of values. It can:

Summarize large tables into concise narratives, such as “North America grew 12 percent while EMEA declined slightly,” based on the numbers it sees.

From the Copilot pane or button in Excel for Windows and the web, you select a range or table, then type a prompt such as “Summarize this banking information by category”.

Copilot analyzes the structure, infers the right fields, and proposes an output you can insert into the sheet.

This matters because most people do not remember every function or PivotTable option. 

Copilot lowers the barrier to serious analysis, especially for business users who know the questions they want to ask but not the exact Excel steps to get there.

What You’ll Gain

• Faster summaries: Turn thousands of rows into a short, readable overview for status reports and leadership decks.
• Automatic categories: Ask Copilot to group by region, product, or owner instead of building PivotTables from scratch.
• Fewer formula headaches: Describe the calculation and let Copilot write and explain the formula.
• Cleaner data: Use prompts to highlight duplicates, sort, and tidy columns before you analyze.

Step-by-Step Instructions

Here's how to do it.

Microsoft Excel - Windows And Web



1. Make sure your data is in a table-like format with clear column headers and no completely blank columns. Copilot works best when the dataset is tidy.
2. Click inside your table and press Ctrl+T to convert it to an official Excel Table if it is not already, or drag to select the range.
3. In Excel for Windows or Excel for the web, select the Copilot button on the Home tab to open the Copilot pane on the right.
4. In the Copilot pane, type a prompt such as: “Summarize this banking data by category."
5. Copilot generates a text summary. Read it carefully, then choose Insert to place the summary into a new area of the worksheet, or copy it into an email or PowerPoint slide.
6. Ask Copilot to categorize with a PivotTable: With the same data selected, prompt: “Create a PivotTable that summarizes total revenue by region and quarter, and add a slicer for product line.” Copilot will propose a PivotTable layout and place it on a new sheet by default.

fig. 1 - Summarize Excel Data Example

Refine the Categories  

1. Use follow-up prompts such as “Sort regions by total revenue descending” or “Format revenue as currency with no decimals” to polish the PivotTable.

Clean Data for Better Summaries  

1. Before or after summarizing, you can ask Copilot to “Highlight duplicate values in column A” or “Remove extra spaces in this sheet” to improve data quality.

Pros and Cons

Pros

• Speed: Copilot can generate executive-style summaries in seconds, ideal for last minute updates to leadership.
• Lower learning curve: Business users who rarely touch PivotTables can still get grouped, categorized views of their data.
• Consistency: Using prompts like “Summarize this data by region and quarter” helps standardize reporting across teams.
• Exploration: Copilot encourages “what if” questions, helping you discover trends you might not have thought to check.

Cons

• Data quality sensitivity: If your headers are unclear or data is inconsistent, summaries can be vague or misleading.
• Black box feel: Some users may not fully understand how Copilot arrived at a particular insight or grouping.
• Licensing and rollout: Copilot in Excel requires eligible Microsoft 365 subscriptions and is still being expanded across regions and channels.
• Not a replacement for experts: Complex financial models or regulatory reports still need human oversight and domain expertise.

Feature Access

• Copilot in Excel is part of the broader Microsoft Copilot offerings for Microsoft 365 and is currently rolling out across commercial and some consumer subscriptions. 
• Availability depends on:
• License: Requires Microsoft 365 subscription.
• App version and channel: Newer Copilot capabilities for PivotTables and forecasting have been introduced.
• Platform: Full Copilot in Excel functionality is most mature on Windows and the web, with mobile support still expanding.

Score

Criterion | Score (0–10) | Justification

Value 9

Dramatically reduces time to insight for everyday analysis and reporting.

Usability 8

Natural language prompts are friendly, but results still depend on clean data and some Excel familiarity.

Wow Factor 9

Watching a dense table turn into a clear summary and PivotTable from a single prompt feels transformative.

Total: 26/30 🌟 Excellent

Copilot in Excel is one of the most impressive everyday AI features in Microsoft 365, outshining older tools like Recommended PivotTables by making analysis conversational instead of configuration heavy.

Key Takeaways

Copilot in Excel can summarize and categorize large datasets with plain language prompts, saving serious time for busy professionals. 

The quality of its insights depends heavily on clean, well structured data, but when that is in place, it turns Excel into a fast, approachable analysis partner.

Cool Tip Snapshot

• Feature Name: Copilot Summarize and Categorize in Excel
• Platform(s): Excel for Windows, Excel for the web, mobile in limited rollout
• Quick Benefit: Turn big, messy tables into clear summaries and grouped views without building complex formulas or PivotTables yourself.
• Access Type (Free, Subscription, Beta): Subscription (Copilot enabled Microsoft 365), with some advanced features in preview channels

Try It Yourself

Open your next “too big to read” Excel workbook, select the main data table, and ask Copilot to “Summarize this data by category."

READ MORE

• Turn Excel Into Your AI Teammate: How To Use Agent Mode In Excel For The Web
• How to Instantly Edit Data Label Text in Excel for the Web
• Unlock Excel Compatibility Versions to Safeguard Your Formulas
• MORE Excel Cool Tips

Read the Full Cool Tip.

🆒Tell Me More

• Copilot can generate PivotTables from a single prompt.

• It works best with clean, well-labeled data.

• You can ask follow-up questions to refine summaries.

• Mobile support is rolling out gradually.

• Copilot respects workbook permissions and sensitivity labels.

⏩Quick Tips

• 🧹 Clean First: Use Ctrl+T to convert your range to a Table before prompting Copilot.

• 🗣️ Be Specific: Ask "Summarize by region and quarter" for better results.

• 🔁 Refine Results: Follow up with "Sort regions by revenue."

• 📊 Pivot Power: Ask Copilot to build a PivotTable instead of dragging fields.



• 📱 Mobile Ready: Use Copilot in Excel mobile app to review summaries on the go.

✅ More Must-Read Tech Tips

👀 How Do I Excel's Trace Precedents Feature?

Struggling to untangle complex Excel formulas? 

Want to see exactly which cells influence your calculations?

Trace Precedents is an Excel feature that visually maps the relationship between formulas and their precedent cells. 

By highlighting the cells that influence a particular formula, users can quickly trace the origins of any data discrepancies or errors.

Here's how to do it.

1. Click on the cell containing the formula you want to analyze.
2. Navigate to the Formulas tab.
3. In the Formula Auditing group, click Trace Precedents.
4. Blue arrows indicate cells with no errors.
5. Red arrows indicate cells that are causing errors or reference invalid data.

Mastering the Trace Precedents feature in Excel can significantly enhance your productivity and data accuracy. 

Whether you're an experienced analyst or an Excel novice, this tool offers immense value in navigating and verifying complex spreadsheets.

Discover more HERE. 

🤔 Have You Ever Wondered How to Use Stale Value Formatting?

Imagine this: you're knee-deep in a complex Excel spreadsheet, juggling dozens of formulas and datasets. 

Suddenly, you realize some of your data hasn't updated correctly, leading to potential errors and wasted time. 

Stale Value Formatting is a powerful new feature designed to enhance data accuracy by visually indicating which cells contain stale values that require recalculation. 

When the underlying data for a formula in a cell changes and the formula has not been recalculated yet, that cell is considered stale. 

Here's how to do it.

Update Cell Values

1. Click the Stale Format icon when a cell is Stale.
2. Select an option to "Calculate Now (F9)" or "Switch to Automatic Calculation".

Turn On or Off

1. To disable stale value formatting, go to "Formulas" on the menu bar.
2. Select "Calculation Options".
3. Select/Deselect "Format Stale Values".

By leveraging the Stale Value Formatting feature in Excel for Windows, you can significantly enhance your data management processes, ensuring accuracy and efficiency. 

This feature is a must-have for anyone who relies on Excel for critical data analysis and reporting.

Find out more HERE.

🙋‍♂️ Here's How to Use Python in Excel.

Have you ever wished for a more powerful way to analyze your data directly within Excel? 

Microsoft has now integrated Python into Excel, bridging the gap between advanced data analytics and familiar spreadsheet functionality. 

This integration is not just a minor update, it's a significant leap forward for anyone who relies on data for decision-making.

Here's how to do it.

Getting Started

1. Ensure you have the latest version of Microsoft Excel installed. Python integration is built into the latest versions.
2. Open Microsoft Excel on your computer.

Enable Python

1. Select a cell and navigate to the "Formulas" tab.
2. Click on "Insert Python."
3. Alternatively, use the function =PY in a cell to enable Python.
4. Enter Python code directly into the cell.

Working with Python Templates:

1. Navigate to the "File" tab.
2. Select "New".
3. Enter "Python" in the search and press "Enter".
4. Select from the available Python templates.

Customize and Analyze

1. Customize the template as needed by editing the Python code within Excel.
2. Use Python libraries like Pandas and NumPy to perform data analysis.
3. Visualize your data using libraries such as Matplotlib or Seaborn within Excel.
4. Check the results and make any necessary adjustments to your code or data analysis.

Learn more about Python in Excel with this tutorial from Microsoft.

The powerful combination of Excel's ease of use and Python's analytical prowess opens up new possibilities for data-driven decision-making.

Learn more HERE. 

❓Did you share this newsletter with three friends yet?

😎 Cool Facts

• 80%: In this case 1 in 25 (4%) people work in Excel 80% or more of their working time! Source.

• 170: Copilot in Excel is available globally in over 170 markets, with some regional exceptions. Source.

• 500+: Excel has over 500 built-in functions, including those in the latest Microsoft 365 versions. Source.

⌨️Today's Cool Keyboard Shortcuts

• Ctrl + T: Convert range to Table.

• Alt + N + V: Insert PivotTable.

• Ctrl + Shift + L: Toggle filters.

• Ctrl + Shift + $: Format as currency.

😜 Tech Joke of the Day 😅

Why did the spreadsheet cross the road?

To get to the other side of the PivotTable.

🔎 Do you have a Cool Tip or tech question? Email us at onecooltip.com@gmail.com.

Cool Tip Haiku

Cells in a long row,

AI whispers what they mean,

Data finds its voice.

How to Remove Your Explicit Content from Google Search Results

Control Your Threads Feed With the New “Dear Algo” Feature

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Throwback: How to Build Digital Sand Art

Boost Your Productivity with Microsoft Excel's Paste as Picture

Have you ever wondered how to make your Excel reports more visually appealing? 

Or how to keep your data updated across multiple sheets without the hassle of manual updates?

Watch

Excel requires magic to make sense sometimes. 🧙‍♂️✨

Trivia Answer: C) Formula Bar

The Formula Bar is the dedicated area in Excel where you can view, enter, and edit formulas and data for the active cell.

When you select a cell that contains a formula, Excel shows the result in the cell itself, while the actual formula appears in the Formula Bar.

This separation makes it easier to review calculations, troubleshoot errors, and modify complex logic.

The Formula Bar sits below the Ribbon and above the worksheet columns.

It is essential for working with functions such as SUM, IF, and VLOOKUP, because it allows you to edit formulas directly without affecting the worksheet layout.

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Tomorrow's Cool Tip is waiting to amaze you.

Until then, go forth and conquer the tech world with your newfound knowledge!

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Enjoy!



Rodger

Chief Cool Tipper

onecooltip.com@gmail.com

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