How to Lock Specific Sections During Co-Authoring

When multiple people edit the same Word document, sections that must remain unchanged often get altered by mistake. Standard co-authoring in Word lets anyone edit any part of the document. This article explains how to use the Restrict Editing feature to lock specific sections while still allowing collaborators to edit other parts of the document. You will learn how to set up section protection, assign editing permissions, and handle common problems that arise when co-authoring with locked sections.

Understanding Section Locking in Co-Authoring

Word’s co-authoring feature allows simultaneous editing by multiple users, but it does not natively support section-level permissions. The Restrict Editing feature, which predates co-authoring, provides the only built-in method to lock specific sections. When you enable Restrict Editing and set the document to “No changes (Read only),” you can then add exceptions for individual sections. Co-authors who open the document will see the locked sections as read-only, while the excepted sections remain editable. This approach works in Word for Microsoft 365, Word 2021, Word 2019, and Word 2016.

Before you start, each section you want to lock must be a separate Word section, created with section breaks. If your document does not already have section breaks where you need them, you must insert them first. The Restrict Editing pane will list each section by its number, and you can apply exceptions only to whole sections, not to individual paragraphs or pages within a section.

Steps to Lock Specific Sections for Co-Authoring

1. Insert section breaks where needed
   Place your cursor at the point where you want a new section to begin. Go to Layout > Breaks > Next Page under Section Breaks. Repeat this for every section boundary you want to control. Each locked area must be its own section.
2. Open the Restrict Editing pane
   Go to Review > Restrict Editing. The pane opens on the right side of the Word window.
3. Set the editing restriction to read-only
   In the Editing restrictions section, check the box labeled “Allow only this type of editing in the document.” From the dropdown list, select “No changes (Read only).”
4. Add exceptions for editable sections
   In the Exceptions section, click “Select sections.” The Section dialog opens, listing all sections in the document. Check the box next to each section that should remain editable. For each selected section, check the “Everyone” checkbox under Groups. Click OK.
5. Start enforcement
   Click “Yes, Start Enforcing Protection” at the bottom of the Restrict Editing pane. In the Start Enforcing Protection dialog, enter a password in the Password field and confirm it. Click OK. The password prevents anyone from turning off the restriction without your permission.
6. Save and share the document
   Save the document to a shared location such as OneDrive or SharePoint. Co-authors who open the file will see the locked sections grayed out and uneditable. The excepted sections will work normally for all users.

Common Issues When Locking Sections in a Shared Document

Co-authors cannot edit any part of the document

This happens when no exceptions were added before enforcing protection. Open the document, go to Review > Restrict Editing, click “Stop Protection,” enter the password, then repeat the steps to add exceptions for the sections you want to remain editable. After adding exceptions, enforce protection again.

The locked sections are still editable by some users

This occurs when the document was opened in a version of Word that does not support Restrict Editing, such as Word for the web or Word for mobile. Co-authors using these versions may bypass the lock. To prevent this, instruct all collaborators to use the desktop version of Word. Word for the web does not enforce Restrict Editing protection.

Section breaks disrupt page numbering or headers

Inserting section breaks can change how headers, footers, and page numbers behave. After adding section breaks, go to Insert > Header or Footer and unlink each section from the previous one if needed. Then reapply the correct header or footer content to each section. Page numbering can be reset or continued using the Page Number > Format Page Numbers dialog.

The password is forgotten

There is no built-in password recovery for Restrict Editing. If you lose the password, you cannot remove the protection. Always store the password in a password manager or document the password in a secure location separate from the file. If the password is lost, you may need to recreate the document from an unprotected backup copy.

Item	Restrict Editing with Section Exceptions	Standard Co-Authoring Without Restrictions
Editing control	Lock specific sections; others editable	All sections editable by all users
User permission granularity	Per section, using Everyone or specific groups	No per-section control
Password protection	Required to enforce; prevents turning off	Not available
Compatibility with Word for the web	Not enforced; locked sections become editable	Full editing support
Setup effort	Requires section breaks and pane configuration	No setup needed

You can now lock specific sections in a shared Word document while leaving other areas open for co-authoring. Start by inserting section breaks exactly where you need protection boundaries. Then use the Restrict Editing pane to set the whole document to read-only and add exceptions for the editable sections. Always enforce protection with a password to keep the lock in place. As an advanced tip, combine this method with Information Rights Management in Microsoft 365 to restrict actions like printing or copying in locked sections, giving you an extra layer of control over sensitive content.