Microsoft has confirmed a copy-and-paste issue affecting Excel 2024, 2021, 2019, and 2016 after the KB5002914 security update.
Microsoft has fixed a known issue that causes copy-and-paste failures for Excel users after installing the September 2026 security updates.
Microsoft Excel users report that this week's KB5002914 Office security update is breaking copy-and-paste operations and formula dragging, with affected users saying that removing or rolling back the ...
A September security update silently killed copy and paste, autofill and formula dragging in Excel.