A subscription notice appears when I open a Microsoft 365 …
If you see a notice to buy, renew, or reactivate your Microsoft 365 subscription when you open Word, Excel, or any other Office application, you'll need to take action in order to keep using …
Unlicensed Product and activation errors in Office
If Office activation fails, you'll see Unlicensed Product or Non-commercial use / Unlicensed Product in the title bar of your Office apps, and most features of Office are disabled. To restore …
"This product key has already been used" error in Office
If you see the message "This product key has already been used," this means that you've already redeemed your product key and added your Office product to your Microsoft account. Don't …
"Telephone activation is no longer supported for your product…
When you select the option to activate Office by telephone, you may see the following error: Telephone activation is no longer supported for your product. Note: This issue impacts Office …
Using product keys with Office - Microsoft Support
Check the sections below to find out if you need an Microsoft 365 product key and what to do with your key if you have one. You just bought Microsoft 365. Where do I enter my new product …
Fix issues when you can't sync OneNote - Microsoft Support
If you're able to open and view the notebook in OneNote for the web, but can't see the changes, the information hasn't yet synced. You can check the sync status for any specific errors by …
Resolve the "This section was originally created in an older …
Follow the steps in this article to resolve the error message “This section was originally created in an older version of OneNote.”
Resolve the 0xE4010641 (Network Disconnected) error in OneNote
If you are seeing the 0xE4010641 error code, OneNote can't sync one or more notebooks because you're disconnected from the network or the network location where your notebooks …
Repair an Office application - Microsoft Support
If a Microsoft 365 application such as Word or Excel isn’t working correctly, sometimes restarting it will fix the problem. If that doesn’t work, you can try repairing it. When you’re done, you …
Export and import OneNote notebooks - Microsoft Support
No matter what version of OneNote you use, you can download a copy of any of your OneNote notebooks to your PC or Mac — either as a backup or to upload its contents to another account.
Fix issues with Class Notebook Add-in - Microsoft Support
Try these troubleshooting tips if you’ve installed the Class Notebook Add-in but it’s not displaying in OneNote or get an error "Sorry, OneNote was unable to start at this time."