Revoke trust for a device

Log in to LastPass and access your vault by doing either of the following:
- In your web browser toolbar, click the LastPass icon and select Vault or Open My Vault.
- Go to https://lastpass.com/?ac=1 and log in with your email address and master password.
Select Account Settings in the left navigation.
Click the Trust Devices tab.
In the "Label" column, locate your device (the default auto-generated name will be alphanumeric, unless you re-named it), then uncheck the box for theEnabled option. When finished, close the Account Settings window.

Results:

You can now log in to the offline version of your LastPass vault (if your authenticator settings are enabled to allow offline access).
Your device has been set to trusted, which does not prompt for multifactor authentication for up to 30 days.