←Module 8
Lesson · 9 min

Co-Authoring in Word

Learn how to share a Word document and collaborate with others in real time using Microsoft 365 co-authoring features.

By the end of this lesson you can

  • Share a document for co-authoring and choose appropriate permissions
  • Explain what co-authoring requires in order to work
  • Work alongside others without overwriting their edits
  • Manage and revoke sharing permissions

Video

Watch the lesson video, then complete the reading and challenge.

Lesson Notes

Read through the key concepts before you try the challenge.

Two people, one document, no emailed versions

On the job

You are revising the intake form with a nurse manager at Lakeside Medical Associates.

Emailing versions back and forth produces 'Intake Form v3 FINAL (JM edits) revised.docx' and a genuine question about which copy is current. Two of the three changes made on Tuesday are in a file nobody opens again.

Your task: Work in one shared document so there is only ever one current version.

Co-authoring lets several people edit the same document simultaneously. Each person's cursor is visible with their name, edits appear within seconds, and there is exactly one file — so the question of which version is current stops existing.

It has one hard requirement: the file must be stored in OneDrive or SharePoint. Co-authoring works by syncing changes through the cloud, so a document on a local drive or a USB stick cannot support it. This is the same requirement AutoSave has, for the same reason.

Sharing permissions outlive the task. A link shared for one afternoon's revision keeps working next year unless you revoke it. Review sharing periodically through Share > Manage Access, set an expiry date on links to anything sensitive, and grant Can view rather than Can edit unless the person genuinely needs to make changes.
AutoSave must be on for co-authoring to feel real-time. If it is off, or greyed out, the file is not in OneDrive or SharePoint — which is also the first thing to check when a colleague reports they cannot see your edits.

What Is Co-Authoring?

Co-authoring lets multiple people edit the same Word document at the same time. Changes from each author appear in real time without requiring anyone to check the file in or out.

Sharing a Document for Co-Authoring

The document must be saved to OneDrive or SharePoint to enable co-authoring. Click Share in the top-right corner, enter the email addresses of your collaborators, choose their permission level (can edit or can view), and click Send.

Share button in the top-right corner of Word
Share document dialog with email entry

Seeing Other Authors in Real Time

When another person is editing the document, their cursor and a colored flag with their name appear in the document. Each co-author is assigned a unique color so you can see exactly where they are working.

Author presence flag showing another user's location

Viewing Who Has the File Open

Profile pictures or initials appear in the top-right corner for everyone currently in the document. Click an icon to see the person's name and jump to where they are editing.

Co-author icons in the top right corner of Word

AutoSave and Co-Authoring

When a file is stored on OneDrive, AutoSave turns on automatically and saves your changes every few seconds. This ensures other co-authors always see the most recent version of the document.

AutoSave toggle turned on in Word

Managing Sharing Permissions

To change or remove someone's access, click Share → Manage Access. From here you can change a collaborator's permission level to View Only or remove their access entirely.

Manage Access panel showing collaborator permissions

Knowledge Check

Check your understanding

Where does a Word document need to be saved to enable co-authoring?

Challenge

Apply what you've learned in this lesson.

Complete the following tasks:

  1. Save a document to OneDrive and confirm AutoSave is on.
  2. Click Share and invite a classmate or colleague with Edit permissions.
  3. Ask them to open the document and make a change — observe their cursor flag.
  4. Locate their author icon in the top-right corner and click it to jump to their position.
  5. Open Manage Access and change their permission to View Only.

Finished this lesson?

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