Excel Copy and Paste Broken by Microsoft’s Own Security Update — How to Fix It
Microsoft’s September 2026 security update for Excel has broken copy and paste for users across Excel 2016, 2019, 2021, and 2024. Update KB5002914, released on September 8, silently kills paste operations with no error message and no warning, creating a serious data integrity risk. Here is how to check whether you are affected, how to […]