Dreamweaver can't open

Check your Windows Event Viewer to see which module is faulting.

The faulting module is often a missing/corrupted DLL or Graphics driver file.  

Possibly Related:

LavaSoft Web Companion plugin is a known conflict with Adobe products.  Uninstalling LavaSoft and its related DLL files fixes that.

Photoshop crashes with Lavasoft Chrome extension installed

reset your preferences - https://helpx.adobe.com/dreamweaver/kb/restore-preferences-dreamweaver-cs6-cc.html

if that fails, read message 1.

When you ask a question you need to provide some basic information

-Forum quick start https://forums.adobe.com/docs/DOC-5601

Mac or Windows, and EXACTLY which version of the operating system?

Recent Mac AND Windows operating systems have been known to cause "odd" problems

Are you using a computer Administrator account with full read/write permission?

Exactly which version of the program do you have that is causing problems?

What is the exact error message that you see?