Click on DevTest Identity Access Manager icon and nothing happens, dialog opens and then closes.
Your JAVA_HOME was set to C:\Program Files (x86)\Java\jre1.8.0_161. This is a 32-bit Java, VS Catalog is expecting a 64-bit Java.
Pointed JAVA_HOME to a 64-bit Java.
Was then able to get IAM up and running, bring up URL, https://localhost:51111, then start VS Catalog, bring up URL, https://localhost:51110, and see services running.