It is indeed not possible to name an Excel worksheet exactly History (any case, e.g., HISTORY, history), because Excel treats that word as a reserved name used by its change‑tracking feature.

Why “History” Is Not Allowed

  • Excel has an internal feature for tracking changes in shared workbooks that creates a hidden or special sheet named History to log edits.
  • To avoid conflicts with that internal sheet, Excel blocks users from naming any worksheet “History” and shows the message “History is a reserved name.”
  • This behavior has existed for many Excel versions (going back at least to Excel 97) and applies regardless of whether the workbook is currently shared or using track changes.

What You Can Use Instead

You can get very close to the name you want by slightly modifying it:

  • Add a suffix or prefix, for example: History_, _History, ProjectHistory, or History2026.
  • Add a trailing space: History (with a space at the end) also works technically, though it can be confusing to spot.
  • Use variations such as Historical_Data, HistoryLog, or ChangeHistory if you want to emphasize logging changes.

Quick How‑To Rename a Sheet

  1. Double‑click the sheet tab you want to rename at the bottom of Excel.
  1. Type your new name (avoiding exactly “History”) and press Enter.

If you specifically want a “history of changes” sheet, you can also enable Excel’s track changes (where still available) so that Excel generates its own History sheet for logged edits instead of naming one manually.

Information gathered from public forums or data available on the internet and portrayed here.