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Microsoft fixed Excel 2016 copy-paste bug. Then reintroduced it. Now it's fixed again

Source: The RegisterRichard SpeedNovember 5, 2026
Read the full story at The Register

A critical copy-paste bug in Excel affected multiple versions when users attempted to paste content into cells with no result. Microsoft patched it in mid-September, but the bug recurred in Excel 2016 following October's KB5002934 security update. Build 16.0.5574.1006 now addresses the issue tied to conditional formatting. The bug specifically affects workbooks with conditional formatting and does not impact other Office versions or Windows security updates.

Key points

  • Copy-paste failure bug reappeared in Excel 2016 after October update
  • New build 16.0.5574.1006 restores the fix
  • Bug linked to conditional formatting in workbooks
  • Only Excel 2016 affected; other versions unimpacted

Summary and key points written by AI from the headline and a short excerpt, so they can be incomplete or wrong. The Register did the reporting; read the original for the full story.

Read the full story at The Register

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