Copilot in Word Issues

How to Find Specific Names in Long Word Documents with Microsoft Copilot

Elise Williams Sep 25, 2026 871 views

Question details

The user needs to extract specific entities, such as ship names, from a massively long Word document (e.g., 120,000 words), but Microsoft Copilot fails to reliably process the entire text.

How to Find Specific Names in Long Word Documents with Microsoft Copilot

Product: Microsoft Word
Device & OS: not provided
Scenario: Attempting to use Microsoft Copilot to identify and extract proper nouns like ship names from a 350-page document.
Observed behavior: Copilot fails to identify the names or returns incomplete results because the document's extreme length exceeds the AI's practical processing limits.

Before you start

Check your Word document's total word count, and create a backup copy of the original file before you begin splitting it into smaller sections.

Solution 1Recommended

Split the Document and Refine Copilot Prompts

Dividing the massive document into smaller sections and providing clear context in your prompt will bypass Copilot's processing limits and yield more accurate entity extraction.

AI tools like Microsoft Copilot have token processing limits. A 120,000-word document is typically too large for reliable full-text extraction at once.

Furthermore, specific entities like ship names are not always easily identifiable from standard AI knowledge bases, making precise prompting and smaller text samples essential for success.

Split the Document into Smaller Parts

Open your original Word document, copy sections of text (e.g., 10,000 to 20,000 words or single chapters at a time), and paste them into new, separate Word documents.

Launch Copilot in Word

Open the first shortened document section in Microsoft Word and click the Copilot icon on the Home tab to open the chat pane.

Use a Precise and Contextual Prompt

Enter a prompt that explicitly defines the entity you are looking for. For example: 'Find and list all ship names in this document. Ship names are typically proper nouns, italicized, and look like Scillonian III or RMS Queen Mary 2.'

Review and Verify the Results

Carefully review the list generated by Copilot. Since AI may occasionally miss names or misinterpret capitalized words, manually cross-check the results before repeating the process for the remaining document sections.

Split the Document and Refine Copilot Prompts

AI Limitations Warning: Always manually verify the extracted lists. AI models can struggle with recognizing non-standard names without explicit context or centralized lists.

Free Microsoft Office alternative

Try WPS Office for Smooth Processing of Massive Documents

If you frequently work with 350-page manuscripts and are frustrated by Microsoft Word's performance or Copilot's strict processing limits, consider switching to WPS Office. It provides a lightweight, highly compatible, and completely free alternative for handling large text files efficiently.

1. Download the Software: Visit the official WPS Office website and click the free download button.
2. Install WPS Office: Run the installer file and follow the on-screen instructions to complete the setup on your device.
3. Open Your Long Document: Launch WPS Writer and open your large .docx file to experience fast editing and responsive AI tools.

Handles extremely large documents (like 120,000-word manuscripts) smoothly without lagging or crashing.Fully compatible with Microsoft Word (.docx) formats, ensuring your formatting stays intact.Includes built-in WPS AI to help summarize, edit, and extract information from your documents efficiently.Familiar user interface makes switching from Microsoft Office seamless and hassle-free.

microsoft office alternative - wps office

Frequently Asked Questions

Why does Microsoft Copilot fail to process my 120,000-word document?

Copilot has processing constraints, often called token limits, regarding the amount of text it can analyze simultaneously. Extremely long documents exceed this capacity, which causes the AI to return incomplete data or fail entirely.

How can I improve Copilot's accuracy when searching for proper nouns?

You can improve accuracy by providing explicit context in your prompt. Instead of simply asking it to 'find ship names,' define what a ship name looks like in your text and provide concrete examples, such as 'RMS Queen Mary 2'.

Is there a maximum document length for using Microsoft Copilot in Word?

While Microsoft frequently updates Copilot's capabilities, very long documents (such as a 350-page book manuscript) generally exceed current practical limits for complex tasks like entity extraction. Splitting the document into smaller chapters is the most reliable workaround.

Microsoft Copilot Issues