It may happen sometimes that the serial number that The Déjà Vu X reports is not a valid serial number, and it is therefore not possible to generate an activation code that will work. This can be corrected by doing the following:
- Log onto Windows using an account with Administrator privileges.
- Disable any antivirus and anti-spyware programs that may be running.
- Download and run this file by double-clicking on it.
This will restore Déjà Vu X's serial number to a correct value.