Install multiple ArcGIS Web Adaptor instances but at different versions?

[Brownschuh]

Our organization is in the process of exploring an upgrade to our enterprise setup.  We have both dev and prod builds at the 10.9.1 version.  Our web adaptors are centrally located on a single machine; dev has 2, prod has 2 as well.  We'd like to explore upgrading our dev environment to 11.5, for testing purposes, but will this version mismatch cause an issue on the web adaptor machine?  Does ESRI even support this type of scenario?  Or would it be best practice to stand up a new machine for the dev web adaptors?

[JoshuaBixby · Accepted solution]

The documentation covers this, albeit it might not be the first/highest search hit:

From Install ArcGIS Web Adaptor silently - ArcGIS Enterprise | Documentation for ArcGIS Enterprise:

ArcGIS Web Adaptor can be installed side by side with other versions. 

The bigger issue, though, is deploying DEV and PRD on the same machines.  I can't understate enough what a bad idea that is from an enterprise IT perspective.

[Priya97317 · Accepted solution]

Hi @Brownschuh Yes different ArcGIS Web Adaptor versions can be installed on the same machine without issue. Keep in mind that Web Adaptor names cannot be same, even if the version is different (can't have 2 web adaptors named "arcgis" on the same machine)

https://enterprise.arcgis.com/en/web-adaptor/latest/install/java-windows/install-multiple-arcgis-web...

https://gis.icao.int/portal/portalhelp/en/web-adaptor/latest/install/iis/install-multiple-arcgis-web...

[Brownschuh]

Great, good to know!