On 8, Microsoft rolled out KB5002914 for Excel, but it apparently has a bug that makes it impossible to copy and paste.

Microsoft Excel users report that this week's KB5002914 Office security update is breaking copy-and-paste operations and ...

Microsoft's September security update stops Excel from pasting. The command fails without a beep and without an error message ...

German]The Microsoft security updates released for Office applications on September 8, 2026, are causing serious collateral damage. In Excel, it is no longer possible to select and copy anything.

Microsoft fixes Excel 2016 copy-and-paste failures caused by KB5002914, while other Excel versions still need workarounds.

Microsoft Excel for the past week has been hanging or crashing on iOS and iPadOS devices, to customers' great annoyance.… The problems appear to have begun following the release of Excel version 2.102 ...

Microsoft has confirmed that copy and paste may silently fail for some Excel users after installing the 2026 KB5002914 ...