Hi, user report that they can’t install my CEP extension. The extension has InDesign 18 as minimum. The error message says that v21.5 is required. Is this a bug or why is this happening? Can this be resolved somehow? Any help appreciated! Thanks! [CleanShot 2026-04-14 at 22.27.09@2x]

After going back and forth with engineering a bit… do you see this error in the Creative Cloud desktop app if InDesign 21.3 is not installed first? I’m also told to please run the Log Collector and share the logs (not in this forum): https://helpx.adobe.com/creative-cloud/apps/troubleshoot/diagnost…

It is most likely this same Adobe error where they cannot correctly identify the app is available if the language is not english [image] No compatible apps Photoshop Well that feels really dumb. I’m changed my language preference in CC app, then had to re-down…

Error message for CEP extension: Compatible app required

Plugin Marketplace

JasonM April 22, 2026, 10:50pm 3

It is most likely this same Adobe error where they cannot correctly identify the app is available if the language is not english

Topic		Replies	Views
Error message: Compatible app required InDesign	3	101	April 14, 2026
No compatible apps Photoshop uxp	10	766	April 25, 2026
CEP version in InDesign 2025 InDesign uxp	2	164	March 10, 2025
Why am I told "I have not installed an application compatible with this plug-in" when I install it? UXP Plugin API	4	368	May 24, 2022
Plugins showing as "Not compatible" in CCD app Photoshop	0	796	March 25, 2021

Error message for CEP extension: Compatible app required

Related topics