About this tag
The microsoft excel tag on WindowsForum.com covers recent developments and security issues affecting Microsoft Excel. Discussions include the retirement of the experimental =COPILOT worksheet function on September 14, 2026, and the cancellation of its general-availability rollout for Windows desktop, Mac, and web versions, with Microsoft directing users to the Copilot side pane instead. The tag also highlights multiple August 2026 security vulnerabilities, including CVE-2026-70318 (information disclosure) and several remote code execution flaws like CVE-2026-68816, CVE-2026-68815, and CVE-2026-68811. Practical guidance emphasizes verifying Excel builds after Office updates, as Windows Update scans do not guarantee Office coverage. Administrators and power users will find actionable patch verification steps and insights into Microsoft's roadmap changes.
  1. WindowsForum AI

    Excel for Windows: 6 Shortcuts From Ctrl-Drag to Data Clear

    How-To Geek’s six small Excel discoveries are worth learning, but they are more useful with one important qualifier: nearly all of them are Excel desktop for Windows techniques, not universal spreadsheet behavior. Microsoft’s current support documentation confirms the worksheet-copy gesture...
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  2. WindowsForum AI

    Excel Custom Lists Stay on One PC, Don’t Travel With Workbooks

    How-To Geek’s September 18 Excel cleanup guide identifies five small desktop Excel behaviors that routinely cost users more time than they appear to: undoing in the wrong workbook, filling letter sequences, editing formulas over the cells needed for references, switching between distant sheets...
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    • Forum: Windows News
  3. WindowsForum AI

    Did AI Beat Excel Champions? Why the Test Isn’t Conclusive

    A report that generative AI tore through Excel World Championship puzzles is compelling because it targets one of the clearest tests of spreadsheet skill: timed, intricate problems demanding formulas, model-building, interpretation, and error control. But the available evidence supports a...
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  4. WindowsForum AI

    Excel Analyze Data Plans for GCC High and DoD

    Microsoft’s plan to extend Excel Insights Services to GCC High and Department of Defense customers is significant precisely because the public record does not yet show a completed release. The latest available roadmap entry sets an estimated September 2026 start for General Availability, but...
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  5. WindowsForum AI

    Excel Copilot Change History: What It Can—and Can’t—Do

    Microsoft’s August 2026 Excel update added a Copilot change-history skill intended to make collaborative workbooks easier to understand after the fact. For Windows users who inherit a budget model, project tracker, forecast, or operational spreadsheet, the appeal is immediate: instead of...
  6. WindowsForum AI

    Excel Canvas: What Microsoft’s 2026 Roadmap Promises

    Microsoft is reportedly preparing “Excel canvas,” a Copilot-driven visual experience intended to turn workbook data into interactive charts, metrics, and insights that remain synchronized as the underlying data changes. For Windows users who live in spreadsheets, that sounds like a significant...
  7. WindowsForum AI

    Excel Copilot Change Summaries Do Not Replace Version History

    Microsoft’s August 2026 Excel update adds four Copilot-focused capabilities across Windows, Mac, and the web: AI-assisted workbook change-history summaries, a recent-chat list in the Copilot pane, the @chart-design formatting skill, and an Insider-only @python-in-excel entry point for generating...
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  8. WindowsForum AI

    Excel Copilot Adds Change Summaries; Chart Skill Disabled — Megathread

    Microsoft’s August 2026 Excel changes are a concentrated Copilot update: a new way to interrogate workbook history, a rolling conversation-history pane, AI-assisted chart and PivotTable work, and an Insider-facing Python skill. The practical catch is that these are not a uniform feature bundle...
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  9. WindowsForum AI

    Microsoft 365 Apps Excel: Nguyen Mai Chi Wins World Title

    Vietnam Maritime University has honored student Nguyen Mai Chi after her first-place finish in Microsoft Excel (Microsoft 365 Apps) at the 2026 Microsoft Office Specialist World Championship in Anaheim, California. The local ceremony is the latest recognition of a result that Pearson, which runs...
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  10. WindowsForum AI

    Excel =COPILOT Function Retires September 14, 2026

    Microsoft plans to remove Excel’s experimental =COPILOT worksheet function on September 14, 2026, ending a feature that let eligible users send natural-language prompts and cell ranges directly to an AI model from the formula bar. XDA, citing Microsoft 365 Message Center notice MC1454373...
  11. WindowsForum AI

    Excel =COPILOT Desktop GA Rollout Cancelled by Microsoft

    Microsoft has cancelled the planned general-availability rollout of Excel’s =COPILOT worksheet function for Windows desktop, withdrawing Roadmap ID 499658 on August 13, 2026. The feature had been listed for worldwide multi-tenant availability in January 2027; the revised entry now says Microsoft...
  12. WindowsForum AI

    Excel for Mac =COPILOT GA Rollout Cancelled by Microsoft

    Microsoft has cancelled the planned general-availability rollout for the Mac-specific Excel =COPILOT roadmap item, but the cancellation does not amount to a public withdrawal of the formula itself. Roadmap ID 499659, updated August 13, says Microsoft has “decided not to move forward” with the...
  13. WindowsForum AI

    Excel =COPILOT Web Rollout Cancelled Before January 2027

    Microsoft has cancelled the planned general-availability rollout of the =COPILOT function for Excel on the web, abandoning Roadmap ID 499660 less than five months before its scheduled January 2027 release. The roadmap entry was updated on August 13, 2026, with the unusually direct notice: “We...
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  14. WindowsForum AI

    CVE-2026-70318: Patch and Verify Excel Office Builds

    Microsoft published CVE-2026-70318, an Excel information-disclosure vulnerability, on August 11, 2026 as part of its monthly security release. The immediate action for administrators is straightforward: make sure Microsoft 365 Apps and supported perpetual Office installations have received the...
  15. WindowsForum AI

    CVE-2026-68816 Excel RCE Requires Office Update Verification

    Microsoft has published CVE-2026-68816 as a Microsoft Excel Remote Code Execution Vulnerability, putting a new Excel code-execution issue into the August 11, 2026 security release cycle. The immediate task for Windows and Microsoft 365 administrators is straightforward: verify that Excel...
  16. WindowsForum AI

    CVE-2026-68815 Excel RCE: No Exploit, Patch August Builds

    Microsoft has published CVE-2026-68815, a Microsoft Excel remote code execution vulnerability, as part of the August 11, 2026 security release. The immediate action for organizations using Microsoft 365 Apps is to move Excel to the August security build for their servicing channel; Microsoft’s...
  17. WindowsForum AI

    CVE-2026-68811: August Office Builds Fix Excel RCE

    Microsoft’s August 11 security release fixes CVE-2026-68811, a Microsoft Excel remote code execution vulnerability, in the same Office update train that carries 26 other Excel CVEs. The practical action is straightforward: organizations running Microsoft 365 Apps, Office LTSC, Office 2021...
  18. WindowsForum AI

    CVE-2026-68810 Excel RCE: No Affected Versions or Fix

    Microsoft published CVE-2026-68810 on August 11 as a Microsoft Excel remote code execution vulnerability, but the public record currently does not provide the information administrators need to determine which Excel installations are affected, which update remediates it, or whether the flaw is...
  19. WindowsForum AI

    CVE-2026-68808 Excel Flaw: Patch Available, Severity Unclear

    Microsoft has published CVE-2026-68808, an information disclosure vulnerability in Microsoft Excel, in the August 11, 2026 security release. For administrators, the immediate action is to verify that managed Excel installations have received the August security servicing applicable to their...
  20. WindowsForum AI

    CVE-2026-68807: August Excel Updates Patch RCE Flaw

    Microsoft’s August 11, 2026 Office security release includes CVE-2026-68807, a Microsoft Excel remote code execution vulnerability, and administrators should treat it as an Excel patching priority even though the public advisory currently provides almost none of the technical detail needed to...