Microsoft Excel KB5002914 update breaks copy and paste for some users
Recorded: Sept. 10, 2026, 7:08 p.m.
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Microsoft Excel users reported that the September 2026 security update, KB5002914, caused disruptions to standard operations, specifically breaking copy-and-paste functions and formula dragging for some users. This issue surfaced following the release of the update as part of the September 2026 Patch Tuesday, with reports circulating on platforms like Reddit and Microsoft Q&A forums. Affected individuals indicated that removing or rolling back the update successfully restored the normal functionality within Excel. The problem was not isolated to a single installation method or Office version; reports indicated that the issue affected users across various platforms, including Office versions ranging from 2016 through 2024, and encompassed both MSI and Click-to-Run installations, as well as Office LTSC Standard 2021. Some affected users reported that the inability to copy, paste, and drag formulas led to team blockages. BleepingComputer tested the situation and found that Excel 2019 Version 2508 (Build 19127.20302 Click-to-Run) did not reproduce the reported problems. However, the text details methods that affected users found successful in resolving the issue. For MSI-based Office installations, uninstalling KB5002914 restored the copy-and-paste functionality. Furthermore, another workaround involved downgrading the Office build using either XML settings or Group Policy, which also resolved the problem for some users. An alternative, less recommended workaround involved replacing the updated excel.exe executable with a version from an older installation, although this approach was cautioned against by BleepingComputer due to the potential for creating mismatched files and introducing other stability or security conflicts. |