Hi Paul,
Msiexec is a legitimate Microsoft program. However, malware might use its name to mislead you.
The legitimate program should not be uninstalled.
Refiouthg.uno Is an unsafe website according to MalwareBytes.
And your copy of msiexec is attempting to access it.
To determine if you may have an illegitimate copy on your PC, see this link for assistance.
https://malwaretips.com/blogs/remove-msiexec-exe-virus/
Glen