This message explains that the office installation program has been stopped by your Windows. The computer must be scanned using the Windows system file scan process. This also shows that Office related files are missing from office Program folders. If this happened recently with any of your cleanup programs, a system restore could help you to fix the same.
Diagnose your computer to fix error code 30038-28 :-
There are few ironically shown Office error code 30038-28 which require an immediate action. There will be a log for every action on your computer which records all the events. It is termed as an Event viewer. This is a Windows Inbuilt office program under system tools, it provides all the information for the problem causing keys.
This could cause due to the failure with your Windows related services and the executable file is unable to read the required files when you try installing Office program. There may be issues with the start up office programs which can be checked under System Configuration.
Perform system file scan:-
System file scan in short SFC scan is windows inbuilt program to fix altered/modified and damaged files of the operating system. It can fix several updates failures, other violations done by several mismatched files.
To Run system file scan in your windows operating system, first Open command prompt (CMD) in admin mode and Run the command SFC/SCANNOW

Office program installation error code30038-28 also can be fixed with this scan if they are not damaged much. If you see any file violations still exists after the SFC scan then move to Event viewer to check what has caused the office program installation error code 30038-28 .Watch video to know how to perform SFC SCAN to fix office error code 30038-28.