PCdefense says my serial number is invalid! What am I doing wrong?
There are a few reason why this may occur:
- You made a mistake when entering your serial number.
- You used an invalid e-mail address.
- In the case of download versions, you did not use the same e-mail address as you used when purchasing the application
- PCdefense is not able to establish a connection to our servers to verify your product.
- Cancel the request for your serial number and activation key and launch PCdefense again so it will attempt the online registration again
- Manually validate PCdefense (see below).
KB: 338 Last updated: Jan 31, 2006