How do I use the Microsoft Universal Office applications: Word Mobile, Excel Mobile, PowerPoint Mobile and OneNote Some Acer products include Microsoft Office Universal applications such as Word Mobile, Excel Mobile, Power Point Mobile and One Note. You must be signed into your computer with a Microsoft account, or enter your Microsoft account credentials to use these applications. If you do not have a Microsoft account, you cansignup for a Microsoft Account . Use the instructions below to launch and sign-in to Microsoft Universal Office Applications. Locate and select the Microsoft Office Universal application you want to launch. The application will open and show you tips. Click the arrow to continue. Click Personal Microsoft Account. Enter your Microsoft account information (Email and password) and click on Login Enter your Microsoft account password and click Sign-in. Click Next and follow the on-screen instructions to start using your Office Universal applications.