Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
For a personal Microsoft 365 subscription, live support is typically available through chat.
- Go to the Microsoft support contact page and sign in to the Microsoft account that has the Microsoft 365 subscription.
- In the search box, type agent support or Chat with an agent.
- Ignore the search results and select Contact support.
- Choose Microsoft 365 and Office and then Technical Support.
- Select Chat with a support agent in your web browser or the Call me back option if shown.
- Complete the prompts to open the chat.
For the 0x0 error itself, Microsoft has a resolved issue for Office on macOS where updating Office and ensuring macOS 12 or later fixes Unknown Error 0x0 or License Not Found. If the new laptop is a Mac, update Office first before contacting support:
- If Office was installed from microsoft.com: open Finder > Applications > Microsoft AutoUpdate and install updates.
- If Office apps were installed from the App Store: open App Store > Updates and update the Office apps.
If the new laptop is Windows and Office apps are failing to start, update Office from File > Account > Update Options > Update Now.
References:
- Unknown Error 0x0 or License not found error in Microsoft 365 or Office running on macOS | Microsoft Support
- How do I reach a Microsoft 365 technical support live agent - Microsoft Q&A
- how can i talk to a real human agent in microsoft support - Microsoft Q&A
- How do I get a live person at Microsoft.? - Microsoft Q&A
- I get a "stopped working" error when I start Office applications on my PC | Microsoft Support