Microsoft confirms KB5002914 Excel update breaks copy and paste
Microsoft confirms KB5002914 Office security update silently breaks copy-paste, autofill, and formula dragging in Excel 2016 through 2024.
Microsoft confirmed the September 2026 KB5002914 security update breaks copy-and-paste, autofill, and formula dragging in Excel 2024, 2021, 2019, and 2016. Failures occur silently with no beep or error message, leaving the destination unmodified. Uninstalling KB5002914 via OfficeC2RClient or Oarpmany restores functionality while Microsoft investigates.
- Copy-paste fails silently in Excel 2016-2024 after KB5002914
- Users get no beep or error message when paste fails
- Uninstalling KB5002914 restores functionality as workaround
- Update shipped in September 2026 Patch Tuesday fixing RCE flaws
From the original article
2 min read at bleepingcomputer.com
Microsoft has confirmed that copy and paste may silently fail for some Excel users after installing the September 2026 KB5002914 security update. [...]
By Sergiu Gatlan · bleepingcomputer.com
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