The Transition to the Microsoft 365 AppThe modern replacement for these legacy viewers is the Microsoft 365 app for Windows. It acts as a hub where you can open any local file. If you do not have a license, the app will open the file in a "Read-Only" mode or redirect you to the web-based version. Top Free Alternatives to Microsoft Doc Viewer

Google Docs, Sheets, and SlidesFor users who prefer a cloud-first approach, Google’s suite allows you to drag and drop Microsoft files directly into a browser. While formatting can occasionally shift in complex documents, it is a highly reliable way to view content on the go. How to Choose the Right Viewer

For Mobile Users: Stick to the official Microsoft 365 mobile app found in your device’s official app store. Conclusion

For Maximum Accuracy: Use the Microsoft 365 app or Office Online. Since these are built by Microsoft, your fonts, margins, and tables will look exactly as the author intended.