Unable to Open InDesign File in Version 20.5

Hi, just checking in to see if you're still experiencing the same behavior. If you are, please let us know and we'll be happy to help further. 

Is this happening with all of your files or just the one that you've shown the screenshot from? Was that file created using any third-party plug-ins? If so make sure that the plug-in gets updated for full compatibility with 20.5.

Hi @Tranquil_Lullaby7573,

Thanks for reaching out, and I'm sorry to hear you're facing this issue. From the error message, it seems you might be on an older version than 20.4, which is likely why you're seeing this prompt. Could you please confirm your exact InDesign version by going to Help > About InDesign, as well as your operating system details?

If you're already on version 20.5 and still running into the same problem, please share a packaged copy of the file so I can test it further. You can upload it to a public cloud service like Google Drive or Dropbox (Ref: https://adobe.ly/42EfYGg). If the file is confidential, feel free to share it via DM on the community instead.

Looking forward to your update.

Abhishek

are you sure you're indeed running InDesign 20.5? is it possible you opened, for example, InDesign 2024 by mistake?