Instead of downloading individual MSI files from third-party sites (which can be risky), use these official methods to restore the file:
It is highly recommended to downloading standalone .msi files from third-party "DLL/MSI fix" websites, as these often contain malware or incorrect versions. Officemui.msi Download
: You may be trying to install an MSI-based version of Office over a "Click-to-Run" version, which is unsupported. Stale Cache : Windows is looking for the file in the C:\MSOCache folder, but that folder has been deleted or corrupted. How to Resolve the Missing File Error Instead of downloading individual MSI files from third-party
: A download progress indicator would be a helpful feature. This would allow users to see the status of their download and estimate the remaining time. How to Resolve the Missing File Error :
: MSI files are version-specific. Downloading a version of Officemui.msi that does not perfectly match your specific build of Office (e.g., Office 2016 vs. Office 365) can corrupt the registry and render the entire productivity suite unusable.
Since Microsoft does not provide individual .msi downloads for specific components, you should use the following legitimate methods to obtain the file. 1. Extract from Original Media
Are you currently seeing this error while a new version or repairing an old one?