You do not need internet access to use normal office like Word, PowerPoint, Excel that are already installed on your computer.
However, you need internet access to install and update your Microsoft 365 apps. You also need internet access to send files, collaborate, access your files on multiple devices, and work on other apps online.
What is the difference between Office 2019 (one-time purchase) and Microsoft 365 (Subscription)?Akujuo Victor2022-07-18T12:21:53+01:00
With Office 2019, you’ll make a one-time purchase and get Office apps solely for one computer. You will have to buy at the total price when there’s a significant upgrade release because there are no upgrade options.
Microsoft 365 comes with a suite of leading office apps that you’re familiar with like Word, PowerPoint, Excel, and other productivity apps like Teams, SharePoint, Power BI, etc. With your subscription, you’ll have access to the latest features, updates, and security fixes at no extra cost. You can also access your apps with up to 5 devices.