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.dotx files not working according to Microsft Learn module - editing with Copilot

Garcia-Siñeriz Hernandez, David 0 Reputation points
2026-04-22T15:56:49.7533333+00:00

The module https://learn.microsoft.com/es-mx/training/modules/empower-workforce-copilot-sales/8-use-word-create-response-template/?ns-enrollment-type=learningpath&ns-enrollment-id=learn.wwl.empower-workforce-copilot-use-cases suggests using Word response templates, which implies .dotx files.

However, Microsoft 365 Copilot currently does not accept or read .dotx files (or .potx).

Only .docx/.doc are supported.

This creates confusion during the exercise, as using .dotx fails in practice.

Recommendation: clarify that templates must be provided as .docx files, or update Copilot to support .dotx explicitly.

Microsoft 365 and Office | Word | Other | Windows
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  1. Charles Kenyon 167.1K Reputation points Volunteer Moderator
    2026-04-22T16:41:50.6233333+00:00

    Try leaving the Edit with Copilot function and then saving as a .dotx in the desktop application. That is, you are using Word to save the template, not Copilot.

    To get the best answers about Copilot, use that forum rather than the Word forum.

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  2. Q&A Assist
    2026-04-22T15:57:02.0733333+00:00
    AI generated content. This question contains an answer created with AI from Q&A Assist. Learn more

    Microsoft 365 Copilot currently supports only specific Word-related file types, and Word template formats such as .dotx and .dotm are not listed among them.

    For Microsoft 365 Copilot (work or school), the supported document formats are:

    • .docx, .doc, .docm, .pdf, .txt, .rtf, .md, .html, .htm for creating documents
    • .docx, .doc, .pdf, .pptx, .ppsm for creating presentations
    • .docx, .doc, .pptx, .pdf, html., .loop, .md for summarizing information

    For Copilot in Microsoft 365 Personal, Family, and Premium, Word-related support is:

    • .docx, .doc, .pdf, .txt, .rtf, .html, .htm when working with documents in Word

    Template formats such as .dotx are not included in these supported lists, which explains why providing a .dotx file to Copilot fails in practice.

    To complete the exercise described in the Learn module with current capabilities:

    1. Create or open the response template in Word as usual.
    2. Save or export the content as a supported format, typically .docx.
    3. Use the resulting .docx file with Microsoft 365 Copilot.

    This aligns the training exercise with the actual supported file types. The product documentation supports the recommendation to clarify in the module that templates must be provided to Copilot as .docx (or another listed supported format) unless Copilot is updated in the future to accept .dotx directly.

    References:

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