At this time the only way to unlock all content in the HISTORY apps and on history.com is to sign in using a supported TV provider that includes the HISTORY channel in your TV package. There is always some content available that is unlocked, which you are welcome to watch without signing into a provider.
We support sign ins with hundreds of local cable and streaming TV providers, which will allow you to unlock episodes. You can see a full list of providers when you click 'sign in' on any locked video.
While recent premieres from the HISTORY TV channel will not appear right away in HISTORY Vault, we also suggest you try it out for commercial-free HISTORY videos anytime, anywhere for only $4.99 per month: historyvault.com.