Connect with and learn from others in the QuickBooks Community.
I'm here to help ensure you can successfully download your QBO App on your new computer.
Windows 10 is already a supported OS for QuickBooks Online App. To ensure you meet the other requirements for Windows, please check this related article: QuickBooks App for Windows and Mac: General support.
Then try downloading it again through this link: https://quickbooks.intuit.com/apps/.
Let me know how it goes. I'm always here to help if have other questions about the download process.