Making sure that QB is updated should be completely irrelevant to vault manager prompting to change password every time it is launched.   The Vault Manager sits outside of QB Desktop, and transcends different versions of QB desktop...it starts up the correct version of QB based on the client's specific QB file.

I agree that it needs to kept current because it could (theoretically) have problems with a specific client QB file if it isn't updated, but launch and login to the vault itself should be independent of any of those types of issues.