InDesign 2021 (16.4.0.54) won't launch

[pritcharddesign]

InDesign crashed this morning due to an apparently damaged file. I restarted. Then it started crashing on trying to launch. I removed InDesign cache file, it still crashed.

CC manager wouldn't update any apps. Uninstalled and reinstalled manager and it would then updated InDesign. It still crashed trying to launch.

I uninstalled and reinstalled InDesign and it's still crashing.

What next?? It's my primary application!!

Thank you

[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

OR

You can always try the creative cloud cleaner tool https://helpx.adobe.com/creative-cloud/kb/cc-cleaner-tool-installation-problems.html