Hello @dmfreeman1202
Welcome to the LastPass Community!
In this case if your vault is opening right after you login and this is from the browser extension you can find the settings under the LastPass Browser extension > Account > Extension Settings > General > Uncheck "Show Vault after login" and this should stop opening your vault to open right after you login from the extension.
Here's the article with the steps: Manage General preferences in Account Settings
Please let us know if you have any other question.
Thank you,
