Hi kamlesh singh and Piyush Bhatia, I checked around and found that from MS side, indeed there is no direct document for DevOps Generator created for Mac OS (I am assuming you're on the latest M series silicon). Not just the Github link, but the official document also explains using windows- https://learn.microsoft.com/en-us/azure/devops/demo-gen/use-demo-generator-v2?view=azure-devops
Currently, the provided executable is designed for Windows environments. Your feedback will be taken into account and accordinly updated for Mac OS (M series silicon)
Until then, you have two workarounds here-
1- The Azure DevOps Demo Generator is available as a hosted service accessible via a web browser. This platform allows you to create projects with pre-populated sample content directly in your Azure DevOps organization without the need for local executables.
Reference- https://github.com/microsoft/AzureDevOpsDemoGenerator
2- If you prefer to use the executable, (This is just my personal suggestion to you to overcome your blocker at this moment) you can run Windows applications on your Mac using virtualization tools like Parallels Desktop or VMware Fusion (based on the silicon version you download it). These tools enable you to create a Windows environment on your macOS device, allowing you to execute the provided .exe file.
Additional related links from MS-
Get started creating and populating demo Azure DevOps Services projects
About the Azure DevOps Services Demo Generator
To run the Azure DevOps Demo Generator project as a console application or executable