A September security update silently killed copy and paste, autofill and formula dragging in Excel.

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 ...

While Windows users are disappointingly familiar with updates causing problems, the same cannot be said of people using Microsoft Office. But with the release of the KB5002914 update for Excel, ...