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 has fixed Excel copy-and-paste failures caused by September 2026 updates across Office 2016, 2019, 2021, and 2024.
To move a cell or range of cells to a different location, highlight the cells and select Edit/Cut, then go to the new location and select Edit/Paste. To copy a selection, select Edit/Copy instead of ...