How can I re-open a closed service request that was unfinished?

A closed service request cannot be reopened through this forum flow. The supported path is to contact Microsoft Support again and provide the previous service request number to the support agent.

For a Microsoft account or Microsoft 365 Family scenario, use one of these paths:

1. Start with the Microsoft account sign-in helper if the issue is related to account sign-in.
   • Use Start sign-in helper.
   • The tool checks the account details entered and guides the next steps.
2. If the issue is with the Defender app or Microsoft 365 support, use Get Help on the web or Get Help in Windows.
   • Describe the issue.
   • If self-help does not resolve it, select Contact Support when offered.
   • Choose the product/service and support category, then confirm.
   • Select either:
     • Chat with a support agent in your web browser, or
     • Provide your phone number and a support agent will call you
3. When connected to the agent, provide the existing case number and explain that the prior troubleshooting ended before resolution.
   • Similar support guidance indicates that reconnecting to a previous request is done by contacting support again and quoting the previous service request number.

For Microsoft Defender support in the Defender portal, opening a support request requires an organizational admin role and Defender for Endpoint licensing. That path does not match a Microsoft 365 Family consumer scenario.

Availability of chat or callback options depends on hours of operation, product, scenario, and subscription.

• # Contact Microsoft customer support
• Use a screen reader to navigate Windows support tools
• Need to reconnect with chat for service request(PII Removed), it says closed, I need to reopen it - Microsoft Q&A
• Contact a Help Assistant - Microsoft Q&A
• Contact Microsoft Defender support