It worked once then I get “Invalid code” error. Why is this?

The two, by far, most common reasons for that error to show are that 1) you are not using the same email address as you used at initial registration, or 2) you are attempting to unlock a similar product but not the exact version/offer that your activation is for, see more detail below. You can also watch this one min. video about the registration process.

1) Because the system matches the activation code to the email you provide, it treats the combination of email and activation code as a logon. This means that each time you enter the activation code, you need to also the very same email address you used at initial registration.

2) If you for example have the A+ Certification Bundle (801 & 802) make sure to access only that A+ Bundle product (third in the menu list). If you try either of the individual A+ tests 220-801 or 220-802, then your Bundle code will throw an invalid code error. As far as the system is concerned there are three A+ products: A+ 220-801, A+ 220-802 and the Bundle. Eacah of these get a different activation code.

2 thoughts on “It worked once then I get “Invalid code” error. Why is this?

  1. I have purchaced the n10-006 network+ practice exam test and now I can’t log in anymore.
    It worked onc yesterday on another PC but today I can’t access anything.
    I checked my login info and all is good and I’m selecting the rigth bundle but it is not working!!

    I need this to work!
    My exam is this week and I paid my due!

    Please I need help!

    1. Do you get an “activation code invalid” message? The problem you may have is that if you do not today enter the email address you used yesterday then CertBlaster will not recognize your logon. CertBlaster considers the first email address you use your username and the activation code the password. Try again making sure you enter that email address you used yesterday with the activation code and let us know how it goes.

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