How do I prevent LastPass from filling erroneous form fields?

If you are on a specific site (e.g., and there is a field on that page that LastPass is filling with an incorrect value but you want it to be filled with a different value (e.g., filling "abc123" but needing to be filled with "abc456"), you can edit the item.

To prevent LastPass from filling in the incorrect value, follow these steps:

  1. Locate the site in your LastPass Vault that contains the incorrect data (e.g., "abc123").
  2. For each matching site, click the Edit icon .
  3. Update the erroneous value.
  4. Click Save when finished.