Download riched32.dll file from DLL library collection and OCX elements. Perhaps this file will help you to correct the error "the riched32.dll library is not found" which appears as a result of incorrect operation of the Windows operating system or work with the program.
How to download free riched32.dll?
Also, this file may be required when developing software. If you use the riched32.dll file, you should review the copyrights to it.