Copy And Paste Bug

Microsoft patches Excel copy-paste bug caused by September 2026 security updates

Microsoft has released fixes for a bug that silently broke copy-and-paste, autofill, and formula dragging in Excel after installing this month's security updates, including KB5002914. Users of Excel 2016, Office LTSC 2019, 2021, and 2024 must manually install specific updates to resolve the issue, which had been widely reported on Reddit and Microsoft's Q&A forums.

bleepingcomputer.com · 2026-09-21

Microsoft patches copy-paste bug in Excel 2016, other versions still affected

Microsoft released update KB5002655 to address a silent copy-and-paste failure introduced by the September security patch KB5002914, but the fix only applies to MSI-based installations of Excel 2016. Users of Excel Online, 2024, 2021, 2019, and Click-to-Run editions of 2016 remain affected, with Microsoft citing a code regression as the cause and recommending the Paste Special workaround in the meantime.

bleepingcomputer.com · 2026-09-18