The Autocorrect Data Corruption
Microsoft Excel shares its text-processing engine with Microsoft Word, which means it comes equipped with an aggressive Autocorrect feature. While helpful when writing an essay, it is disastrous when entering structured data. If you are typing product codes, acronyms, medical abbreviations, or specific employee IDs (e.g., typing “teh” as a code instead of the word “the”), Excel will silently change your data the moment you press Enter. If you don’t notice the change immediately, your spreadsheet becomes corrupted with inaccurate data, destroying VLOOKUPs and database imports.
How to Disable the Autocorrect Engine
You can turn off this aggressive “helpful” feature deep within the Proofing settings, forcing Excel to accept exactly what you type without question.
1. Open Microsoft Excel.
2. Click on the File tab in the top-left corner of the ribbon.
3. Select Options at the bottom of the left-hand green sidebar.
4. In the Excel Options window, click on Proofing in the left menu.
5. Click the large button at the top right labelled AutoCorrect Options…
6. A new dialog box will appear. Look closely at the list of checkboxes.
7. Untick the checkbox labelled Replace text as you type.
8. Click OK to close the AutoCorrect box, then click OK again to close the Options window.
Specific Exceptions vs. Total Shutdown
Disabling the feature entirely is the safest option for data entry. However, if you actually like having Excel fix obvious typos like “teh” to “the,” but you just want it to stop changing one specific acronym unique to your company, you don’t have to turn the whole system off. In that same AutoCorrect Options menu, scroll through the massive list of replacement rules at the bottom, find the specific rule that is causing you trouble, highlight it, and click Delete.