Leftover files from an Office trial or older version are a primary cause of installation failures. Go to . Uninstall any existing Microsoft Office entries.

When the Office installation wizard halts and requests that you "Browse to a valid installation source," it is typically triggered by one of the following underlying issues:

| Office Version | File Size (Approx) | Language Scope | | :--- | :--- | :--- | | Office 2010 Pro Plus | 35 MB - 50 MB | Basic Proofing | | Office 2013 Pro Plus | 120 MB - 180 MB | Full Proofing Suite | | Office 2016 Pro Plus | 200 MB - 250 MB | Includes Office 365 shared components | | Office 2019 / 365 | 300 MB+ | Cloud-enhanced dictionaries |

By downloading and installing Proplus.ww Propsww2.cab Office, you can resolve these issues and successfully install Microsoft Office.