Hi Andriy Kirmas,
Please kindly note that this is a public community forum, I do not have the ability, tools to unblock, recover accounts or bypass security. Only Microsoft’s official recovery process can restore access.
I understand how frustrating this is, especially since child accounts don’t have a “Leave family group” option.
Have you already tried the Q&A Assist suggestions? In addition, please answer quick question to help guide further:
- Do you recognize the organizer account shown in your daughter’s family group, or does it look unfamiliar?
In the meantime, please try the following:
1, Check who the current organizer is (from the child account)
Have your daughter sign in here: https://family.microsoft.com
- Open her profile
- Look for family members listed
- Identify which adult account is managing her
Sometimes the organizer might be:
- Another parent/guardian
- An older account you no longer use
- An account created during device setup
2, If the organizer account is known but inaccessible
Try to recover that organizer account first:
- Go to: https://account.live.com/acsr
- Enter your locked out email and an alternate email where Microsoft can contact you.
- Provide as many accurate details as possible, such as old passwords, frequent contacts/subject lines and submit from a familiar device/location.
- Wait 24–72 hours for a response. You may refine and resubmit up to twice per day.
- Please see this official guide to help you fill out the form more accurately: Help with the Microsoft account recovery form - Microsoft Support
Once access is restored, the organizer can remove the child from that family.
3, If you don’t recognize the family group at all
This can happen if the child account was previously added elsewhere. In this case, you can contact Microsoft support for Family Safety:
- Visit Contact Us - Microsoft Support
- Select the product or service you're having issue with.
- Click Get Home Support
- Type a brief description of your issue in the search box.
- Click Get Help and select Contact Support below.
- Go to the Products and services tab, and choose the appropriate product.
- On the Category tab, choose the appropriate category or an alternative option.
- Go to Confirm.
- Look for and select "Chat with a support agent in your web browser" (during business hours) if available. Explain your situation clearly.
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