Office Settings & Configuration

How to Fix Incorrect Spanish Grammar Checking in Microsoft Word

John Wilson Sep 29, 2026 869 views

Question details

The user needs to stop Microsoft Word from marking properly accented Spanish words as spelling or grammar errors after pasting AI-generated text.

How to Fix Incorrect Spanish Grammar Checking in Microsoft Word

Product: Microsoft Word
Device & OS: not provided
Scenario: Editing a Spanish document and pasting AI-generated text.
Observed behavior: Word incorrectly marks correctly spelled and accented Spanish words as errors because the proofing language switches or automatic detection fails.

Before you start

Make sure you have the appropriate Spanish proofing tools downloaded and installed for Microsoft Office before adjusting the document language settings.

Solution 1Recommended

Manually Set the Document Proofing Language to Spanish

Override Word's automatic language detection by selecting your entire document and manually assigning the correct Spanish dialect.

When you paste AI-generated text, Word's automatic language detection may become confused by formatting or phrasing, switching the proofing language back to English. Manually setting the language and disabling automatic detection resolves this issue.

Select the entire document text

Click anywhere inside your document and press Ctrl+A on your keyboard to highlight all text, or use your mouse to select only the affected paragraphs.

Navigate to the Language settings

Go to the 'Review' tab on the top ribbon, click on the 'Language' button in the Proofing group, and select 'Set Proofing Language' from the drop-down menu.

Choose the correct Spanish variant

In the Language dialog box, scroll through the list and select the appropriate Spanish dialect for your document (e.g., Spanish (Spain), Spanish (Mexico)).

Disable automatic language changes

Uncheck the box that says 'Do not check spelling or grammar', and importantly, uncheck 'Detect language automatically' so Word stops changing the language on its own. Finally, click OK to apply the settings.

Manually Set the Document Proofing Language to Spanish

Settings Applied Successfully: Once you clear the automatic detection checkbox, Word will strictly adhere to the Spanish proofing rules and stop flagging your correctly accented words as errors.

Free Microsoft Office alternative

Try WPS Office for Seamless Multilingual Word Processing

If you frequently struggle with language proofing glitches in Microsoft Word, WPS Office provides a free, lightweight alternative with an easy-to-use multilingual spell checker and full compatibility with Microsoft formats.

1. Download and Install WPS Office: Visit the official WPS Office website to download and install the free suite on your device.
2. Open your Document: Launch WPS Writer and open the existing Microsoft Word document where you need to perform the grammar check.
3. Set the Spell Check Language: Navigate to the Review tab, click on Spell Check, choose Set Language, and select Spanish to instantly proofread your text.

Built-in robust spell checker tailored for Spanish and multiple other languages.Seamless and full format compatibility with Microsoft Word (.docx) files.Free, lightweight, and fast, avoiding the bloat and automatic formatting glitches of traditional office suites.

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Frequently Asked Questions

Why does Word mark correctly spelled Spanish words as errors?

This happens when the document's proofing language is incorrectly set to English or another language. The built-in dictionary checks the Spanish words against English rules, causing correct Spanish accents and spellings to be flagged as wrong.

Why does the proofing language keep changing back on its own?

Microsoft Word includes a 'Detect language automatically' feature that tries to guess the language you are typing in. When pasting AI-generated text, this feature can misidentify the language and silently switch the proofing rules. Disabling this option stops the unwanted changes.

How do I install Spanish proofing tools in Microsoft Word?

Go to File > Options > Language. Under the 'Office authoring languages and proofing' section, select 'Add a Language', choose your preferred Spanish variant from the list, and click 'Add' to install the necessary dictionary files.

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