When you need to collaborate with clients, vendors, or partners outside your organization, sharing a Word document directly from Microsoft 365 is the safest method. Sending a file as an email attachment creates version confusion and exposes your content to unauthorized forwarding. Microsoft 365 provides built-in sharing controls that let you set permissions, expiration dates, and password protection for external recipients. This article explains how to share a Word document with external users using the Share button, link settings, and the Microsoft 365 admin center when needed.
Key Takeaways: Sharing Word Documents With External Users in M365
- Share button in the top-right corner of Word: Generates a link that you can customize with edit or view permissions and an expiration date.
- Link settings > Specific people: Restricts access to named external email addresses only, preventing link sharing beyond intended recipients.
- File > Info > Protect Document > Always Open Read-Only: Prevents external users from making permanent changes to the original file when they open a shared link.
How External Sharing Works in Microsoft 365
Microsoft 365 lets you share documents stored in OneDrive or SharePoint with people who have a Microsoft account or a guest account in your tenant. When you share a Word document, the system creates a secure link that points to the file in the cloud rather than sending the file itself. External recipients click the link and authenticate with their own Microsoft account or a one-time passcode sent to their email address. The link includes permissions you set, such as view only, edit, or comment. Your organization’s admin must enable external sharing in the SharePoint admin center before you can share with people outside your company. If external sharing is disabled, you will see an error message when you try to create a shareable link.
Steps to Share a Word Document With External Users
The following steps assume your document is saved to OneDrive or SharePoint. If the document is stored only on your local drive, you must first save it to the cloud using File > Save As > OneDrive or SharePoint.
- Open the document and click Share
Open the Word document you want to share. In the top-right corner of the ribbon, click the Share button. A dialog box titled Send Link appears. - Change link settings to control access
In the Send Link dialog, click the link settings gear icon or the link type dropdown. By default, the link may be set to Anyone with the link. Change this to Specific people to restrict access to named external users. - Set permissions: Can edit or Can view
Below the link type dropdown, select either Can edit or Can view. Choose Can edit if the external user needs to make changes. Choose Can view if they only need to read the document. You can also enable Block download to prevent the recipient from saving a local copy. - Add external email addresses
In the Enter a name or email address field, type the full email address of the external user. Separate multiple addresses with semicolons. Click the Add button or press Enter after each address. - Include an optional message and send
If you want, type a brief message in the Include a message field. Click Send. Word sends an email invitation containing the secure link. The recipient clicks the link and signs in with their Microsoft account or receives a one-time passcode.
Sharing With an Expiration Date
To set an expiration date for the link, follow steps 1 through 3 above. In the link settings dialog, expand the Advanced settings section. Under Expiration, choose a date and time. After that date, the link stops working and external users cannot access the document anymore. This setting is available only when the link type is set to Specific people or People in your organization.
Sharing With a Password
Word itself does not offer a password option in the Share dialog. To password-protect a shared link, your Microsoft 365 admin must enable the feature in the SharePoint admin center under Sharing > Expiration and password settings. Once enabled, the link settings dialog shows a Set password checkbox. You then enter a password that the recipient must type before opening the document.
What External Users See When They Open the Shared Link
When an external recipient clicks the link, their browser opens a page that asks them to verify their identity. If they have a Microsoft account (for example, a personal Outlook.com or a work account from another company), they sign in with that account. If they do not have a Microsoft account, they can request a one-time passcode sent to the email address you used when sharing. After authentication, the document opens in Word for the web. If you gave edit permissions, the user can make changes that are automatically saved to your OneDrive or SharePoint. If you set view-only permissions, the document appears in read-only mode and editing tools are hidden.
Common Issues When Sharing With External Users
External Sharing Is Disabled by the Admin
If you see the error message “External sharing is turned off for your organization,” your Microsoft 365 admin has disabled external sharing at the tenant level or for the specific site. Contact your admin and ask them to enable external sharing in the SharePoint admin center under Policies > Sharing. They can set it to Allow sharing to authenticated external users or Allow anyone with the link.
Recipient Cannot Open the Link
If the recipient clicks the link and sees a blank page or an access denied message, verify that the email address you entered matches the recipient’s Microsoft account email. If the recipient uses a different email for their Microsoft account, ask them to sign in with that account. Alternatively, resend the link with the correct email address.
Document Does Not Save Changes Made by External User
When an external user edits the document in Word for the web, changes save automatically to the cloud. If the user downloads a copy and edits it offline, those changes are not synced back to the original file. Advise external users to always edit in the browser.
Word Online vs Desktop: Sharing Behavior Differences
| Item | Word for the web (browser) | Word desktop app |
|---|---|---|
| Share button location | Top-right corner of the ribbon | Top-right corner of the ribbon |
| Link expiration dates | Available in link settings | Available in link settings |
| Password protection | Requires admin to enable | Requires admin to enable |
| Block download option | Available in link settings | Available in link settings |
| Edit in browser vs desktop | Opens in browser by default | Opens in desktop app if user has it installed |
| One-time passcode for guests | Supported | Supported |
Now you can share a Word document with external users using the Share button and link settings in Microsoft 365. Start by saving the document to OneDrive or SharePoint, then set the link type to Specific people and enter the recipient’s email address. For tighter security, enable expiration dates and block download options. If your organization’s external sharing is disabled, contact your admin to adjust the policy in the SharePoint admin center. As an advanced tip, use the Block download setting to prevent external users from saving a local copy while still allowing them to view or edit the document in the browser.