Is it possible to install two different versions of ArcGIS Pro on the same machine?

Answer

No, it is not possible to install multiple versions of ArcGIS Pro on the same machine. Only one version of ArcGIS Pro can be installed on the machine at a time. To install a different version of ArcGIS Pro, uninstall the existing version and reinstall a different version.

1. Uninstall ArcGIS Pro. Refer to ArcGIS Pro: Uninstall ArcGIS Pro for instructions.
2. Download the desired version of ArcGIS Pro. Refer to ArcGIS Pro: Download ArcGIS Pro for instructions.
3. Reinstall ArcGIS Pro. Refer to ArcGIS Pro: Install ArcGIS Pro and optional components for instructions.

Note:
If the reinstalled version of ArcGIS Pro is lower than the previous version, there may be backward compatibility issues for certain project files. For example, certain files created in a higher version of ArcGIS Pro may not work in a lower version.