Files with userreturn file extension may be found as some kind of text files. Probably generated by some program.
USERRETURN file extension - User Return data
What is userreturn file? How to open userreturn files?
File type specification:
It seems userreturn file extension is used for some kind of text file generated by unknown program.
userreturn files with this extension appeared in several anti-virus testing sites where they were tested for viruses.
This userreturn file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.