Microsoft restores copy‑paste functionality for Excel 2016 after September security patch

Microsoft has released a corrective update that resolves a copy‑and‑paste malfunction affecting some users of Excel 2016. The problem emerged after the deployment of the September 2026 security update identified as KB5002914, which caused the spreadsheet program to intermittently reject paste commands, disrupting routine workflows.

The glitch was first highlighted by security‑focused outlet BleepingComputer, prompting a wave of reports from corporate IT departments that rely on Excel 2016 for daily data handling. Because the issue manifested only after the specific security patch, many administrators initially suspected broader compatibility problems, but testing confirmed the fault was tied to the new update.

In response, Microsoft’s Office engineering team issued a targeted fix as part of the October 2026 cumulative update cycle. The patch restores the standard clipboard interaction and includes a brief advisory for users who may have already applied the problematic update. Administrators are encouraged to install the latest update or, if necessary, roll back the September patch while awaiting the new release.

Excel 2016 remains a staple in many enterprises despite the availability of newer Office versions, meaning the interruption had a tangible impact on productivity. The copy‑paste operation is a core feature for data entry, formula replication, and report generation; its loss forced some teams to resort to manual entry or temporary workarounds, slowing down processes that depend on rapid data manipulation.

Microsoft’s quick turnaround underscores its commitment to maintaining legacy Office products that continue to serve a substantial user base. The company has pledged to monitor the situation for any residual side effects and to prioritize stability in forthcoming updates. Users are advised to keep their Office installations current and to report any anomalous behavior through official support channels to help prevent similar disruptions in the future.