# Recover from a lost key

> Recover from a lost Vivox access token signing key.

If the token signing key is lost or compromised (which is highly unlikely in a production system, but is possible in a development system), you can clear all of the keys for a specific issuer by using the included Python module as follows:

```plaintext
python vivox_admin.py revoke_keys -s
https://assigned_subdomain.www.vivox.com/api2/ -u your_admin_username -p
your_admin_password -i your_issuer
```