Hi, I'm John! I will help you with this.
You’re absolutely right, the error code 0xC004C060 usually means that your Office 2019 key is still tied to your old Lenovo, which unfortunately can’t be deactivated automatically if the device no longer starts.
It’s also worth noting that as of today, October 14, 2025, Microsoft has ended support for Office 2019, so phone and chat support are no longer officially available. Reference: https://support.microsoft.com/office/end-of-support-for-office-2016-and-office-2019-818c68bc-d5e5-47e5-b52f-ddf636cf8e16
However, you can still try reaching Microsoft Support directly using these steps:
- Here is the link: https://support.microsoft.com/home/contact
- Type this keyword and press Enter: Contact Support.
- At the bottom, click "Sign in to contact support" and sign in with your Personal Microsoft account (Not work or school account), or click "Contact Support" if you're already signed in.
- In Product and services, select "Windows".
- In Category, select "Technical support."
- Click "Chat with a support agent in your web browser".
If you ever find yourself stuck in a loop, please use the keywords "Contact Support" or "Live Chat" (without the quotes) and click "Contact Support" at the bottom.
I really hope this information is helpful!
Let me know if you have any further questions or concerns.