I can't open any document in 16.4. I recently had to convert a 17v. doc to my version (older OS on M

[louisem3614435]

I can't open any document in 16.4. I recently had to convert a 17v. doc to my version (older OS on Mac) now nothing will open at all. New doc won't create either. what is going on?

[Mike Witherell]

https://community.adobe.com/t5/indesign-discussions/reset-indesign-preferences-and-other-troubleshoo...

[Eugene Tyson]

Try resetting your preferences:
The easiest way to reset everything is to delete the InDesign preferences: as soon as InDesign starts to boot hold down Shift, Alt, Ctrl (and Apple/Cmd if working on a Macintosh). A dialog will appear asking to delete the InDesign Preferences, select 'Yes' on this dialog.
Further info and instructions here if needed:
https://helpx.adobe.com/in/indesign/kb/indesign-preferences-support-file-locations.html

Reinstalling rarely fixes everything - you can do a complete reinstall using the
Creative Cloud Cleaner Tool https://helpx.adobe.com/creative-cloud/kb/cc-cleaner-tool-installation-problems.html