Latest InDesign update crashes upon open. It also won't open documents.

https://community.adobe.com/t5/indesign-discussions/reset-indesign-preferences-and-other-troubleshooting/m-p/11990234?search-action-id=388577361913&search-result-uid=11990234

Check clean reinstall section. 

Hi @CChambers555 ,

Sorry to hear about the trouble. In addition to Steve's suggestions, you can check this article and let us know if this helps or if you need further assistance.

Thanks

Rishabh

The latest InDesign version is 18.2.1. This works for almost everyone, Mac or Windows.

Sometimes it's necessary to restore you preferences for a new update to work properly. Here are some instructions for doing that:

https://www.rockymountaintraining.com/adobe-indesign-rebuilding-preferences-cache/