Migrate to Exb Developer v. 1.20 No Apps

JaredPilbeam2 — Wed, 01 Apr 2026 16:51:27 GMT

This happened last time I migrated two years ago to v 1.16. Now I can't seem to get my apps to show on the localhost:3001 page for the most recent upgrade. Following the migrate instructions, it should be simple.

I downloaded the new version. There was no apps folder under server/public so I created one. Then I copied over an apps folder from the old version (v 1.16). I opened the local page and I actually seen my app for a split second flash on the screen, but after that no app. I created a new Client ID in AGOL. No difference.

The info.json is still showing version 1.16.0.

Re: Migrate to Exb Developer v. 1.20 No Apps

JaredPilbeam2 — Thu, 02 Apr 2026 21:10:27 GMT

With help of Support this was resolved. Workflow:

First we created a new test app in v1.20. This generated a new app folder in the exp builder dev edition in the server folder.

In the test app's path expBuilderv1.20/server/public/apps/<testApp>, we opened the info.json file.

In the info.json file, the portalUrl property was set to "https://WillCountyGIS.maps.arcgis.com" by default.

Comparing it with the portalURL property of the info.json file of the apps in v1.16, we found that the portalUrl was the same but with different casing "https://willcountygis.maps.arcgis.com".

This difference caused the apps to not be recognized in the v1.20 exp builder.

Then we simply copied all the apps to upgrade from v1.16/server/public/apps to the server/public/apps folder of v1.20 as suggested by the documentation:

https://developers.arcgis.com/experience-builder/guide/upgrade/

Finally, we changed the portalUrl to "https://WillCountyGIS.maps.arcgis.com" for all the copied app's info.json in v1.20.

We also made sure the id property matched the number on the app folder.

topic Migrate to Exb Developer v. 1.20 No Apps in ArcGIS Experience Builder Questions

Migrate to Exb Developer v. 1.20 No Apps

Re: Migrate to Exb Developer v. 1.20 No Apps