How to Add a Family Member After Their Phone Is Lost

When you cannot finish adding a family member to Microsoft 365 Family because their phone is lost and the usual verification method is unavailable, the process usually stops at Microsoft account sign-in. Start with an alternate verification path, then complete the Family invite.

Why Adding a Family Member to Microsoft 365 Family Gets Stuck

You are trying to add someone to your Microsoft 365 Family subscription. The family member lost their phone, so the verification method Microsoft usually asks for is unavailable. Until that person can sign in and accept the invite, the Family add cannot be completed.

Quick Fix for a Microsoft 365 Family Invite Blocked by Lost-Phone Verification

Ask the family member to open https://account.microsoft.com. When verification appears, choose I don’t have any of these or Use a different verification option if available. Then confirm whether the same Microsoft account still opens from another device or browser. After sign-in works, send or reopen the Family invite to that Microsoft account email.

Possible Causes of Microsoft 365 Family Verification Failure

• The registered device may be unavailable after a lost phone.

• The Authenticator app may be out of sync, or no usable backup method may remain.

• Adding a family member usually requires an invite to the person’s Microsoft account email, then sign-in and acceptance.

• The invite may have been opened under a different Microsoft account than the one that received it.

Recommended Solution: Recover Microsoft Account Sign-In, Then Accept the Family Invite

When to use this: Use this first when the family member lost an iPhone or other phone and cannot complete the usual verification prompt while joining Microsoft 365 Family.

Verification failures usually occur when the registered device is unavailable, the Authenticator app is out of sync, or no usable backup method remains. Start with an existing trusted method. Reset and re-register MFA through an organization administrator only when that path applies and is necessary.

1. Ask the family member to open https://account.microsoft.com on another phone, tablet, or computer.

2. Sign in with the Microsoft account email that should receive and accept the Family invite.

3. When Microsoft asks for verification, choose I don’t have any of these or Use a different verification option if available.

4. Follow the on-screen steps using any remaining trusted method, such as another registered email, a backup code, or another approved device when one is still available.

5. After sign-in succeeds, verify whether the same Microsoft account can still be opened from another device or browser.

6. As the Family organizer, send an invite to that Microsoft account email if one is not already pending. The family member should sign in and accept it.

Why this works: Microsoft 365 Family membership usually depends on the invitee signing in and accepting the invite. Restoring sign-in with an alternate verification option restores that blocked step.

If this fails: Confirm the invite email matches the account being used. If every recovery path fails, Microsoft’s official account recovery process may be required. Use an organization administrator MFA reset only for work or school accounts when necessary—not as the first step for a typical personal Family invite.

Additional Check: Confirm the Microsoft 365 Family Invite Email and Account

1. As the Family organizer, confirm the invite was sent to the correct Microsoft account email.

2. Ask the invitee to open the invite from that same inbox and sign in with that same account.

3. Have them accept the invite after the verification challenge is cleared.

4. If the invite expired, send a new invite and repeat acceptance after successful sign-in.

Keep Editing Office Files With WPS Office While Account Access Is Blocked

While the family member is blocked from finishing the join, WPS Office can still help with everyday documents:

1. Download and install WPS Office on a working computer or device.

2. Open Word, Excel, or PowerPoint files in WPS Writer, Spreadsheet, or Presentation.

3. Edit, save, convert, or export common office and PDF files as needed.

4. Share finished files through your usual email or cloud method once the work is done.

If you need a practical Office alternative during account recovery, try WPS Office.

Prevention Tips for Microsoft Account Verification and Family Invites

• Register more than one sign-in verification method on the Microsoft account.

• Store recovery codes in a place that does not depend on the primary phone.

• Before replacing a phone, confirm you can still sign in from another device.

• Send Family invites to the invitee’s primary Microsoft account email and ask them to accept promptly.

FAQs About Adding a Family Member to Microsoft 365 Family

Can I add someone to Microsoft 365 Family without them signing in?
Usually no. The invite typically needs to be accepted after sign-in.

What should they click if the lost phone is the only verification method shown?
Choose I don’t have any of these or Use a different verification option when those choices appear at https://account.microsoft.com.

Should we reset MFA through an organization administrator first?
Only when necessary for a work or school account. For a typical personal Family invite, start with alternate verification on the Microsoft account itself.

Can WPS Office repair Microsoft account verification failures?
No. It can help you keep working on documents while access is restored.