Error: Execution of command "{/nios2eds/Nios II Command Shell.bat} make all 2>> stderr.txt": child process exited abnormally

Due to a problem in the Quartus® Prime Standard Edition Software version 19.1 Windows* version onwards, you might see this error when generating the UniPHY-based External Memory Interface IP.

Install the Windows Subsystem for Linux (WSL) on Windows OS for all Quartus® Prime Standard Edition Software versions 19.1 Windows version onwards. For more details, refer to this article. 

There is an additional workaround requirement if you are using Quartus® Prime Standard Edition software version 19.1 on Windows. For more details, refer to this article. 

There is an additional workaround if you use Windows 10 version 19.03 and later. For more details, refer to this article.