WAB Dev Error Launching Deployed Apps and Starting WAB Locally - AGOL hostname could not be found

MattChomicky1 — Tue, 20 Sep 2022 15:29:08 GMT

I have a couple of Web AppBuilder applications that I had successfully deployed to my ArcGIS Online organization by hosting on an Azure Static Web App, and these had been up and running without any issues until recently. I am not sure when this issue began, but yesterday one of the users of the applications let me know that they were having issues with the apps not loading:

One thing that I noticed is that the prompt that normally pops up to sign into ArcGIS Online is not showing up now when attempting to launch the apps.

I attempted to start WAB from my local machine to begin looking into the issue, and when doing so I am getting the the error "Unable to access https://bmcd-gis.maps.arcgis.com A server with the specified hostname could not be found." so I am unable to log in to ArcGIS Online and view the apps from WAB Dev edition either.

I thought that maybe updating to a newer version of WAB would fix the issue, but I am getting the same error when attempting to start version 2.25 as well. Is there any reason I why I wouldn't be able to get past this "setportalurl" step using the URL to our AGOL organization?

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WAB Dev Error Launching Deployed Apps and Starting WAB Locally - AGOL hostname could not be found