(Office Source Engine) is a legitimate background service developed by

Once extracted, run the setup.exe from the new, uncompressed folder. 2. Re-Download the Installation Package

If the extraction did not work, the installer file is likely corrupt. Delete the file and download it again. A corrupted .cab file can cause this exact error. 3. Use the /extract Command

You have some control over the ose.exe process, though complete removal is not recommended.