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Known update issues

KB5002914 – known issues and fixes

KB5002914 is a Microsoft update from Patch Tuesday September 2026, released on 8 Sep 2026. According to the Security Update Guide it fixes 30 vulnerabilities (Microsoft Office). Affected according to our entries: Microsoft Excel 2016 to 2024. Known issues with this update: 1 with workaround.

0Open
1Workaround
0Fixed
30Vulnerabilities fixed

← All known issues

Known issues with KB5002914

WorkaroundKnown issueCommunity reportCheck script

Excel 2016-2024: Copy/paste broken after September 2026 Office update (KB5002914)

Users report that copy, paste and drag-fill of formulas in Excel fail after the Office security update KB5002914 of September 2026. The problem does not occur on all systems. This is reported by users and trade media, not yet confirmed by the vendor. Uninstalling the update is reported to restore copy/paste.

Microsoft · Excel 2016 to 2024

Where the information comes from

We continuously read the vendors’ official sources, community reports and trade media and summarise them in our own words, with a link to the source:

  • Microsoft: Windows release health (Windows 10/11, Server 2016 to 2025), Windows message center, known issues of Microsoft 365 Apps (Outlook, Excel, Word, PowerPoint), Edge, Intune, Autopilot, Windows 365 and Entra Connect, Microsoft KB articles with timelines, Exchange and Windows IT Pro blogs, optionally Microsoft 365 service health and message center
  • other vendors: Veeam KB, Citrix (known issues), Ubuntu and Debian (regressions), Broadcom (VMware), Fortinet, Cisco, Mozilla, Let’s Encrypt
  • community (title, short excerpt and link only, without the names of the authors): Microsoft Q&A, Microsoft Tech Community (discussions), Veeam R&D Forums, Eleven Forum
  • targeted web research with AI (Claude), e.g. on the updates of the month – this also finds discussions on Reddit and in forums; such entries are labelled as community reports until the vendor confirms them
  • early warning from trade media (title and link only): Born’s Tech and Windows World, BleepingComputer, AskWoody, Windows Latest, Windows Central, gHacks, The Windows Club, Deskmodder, Dr. Windows, WindowsArea, Frankys Web, heise online

Summary and translation with AI (Claude by Anthropic) – without any data of visitors.

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