This error will occur if the license key entered in NVivo is for an older/newer version of the software OR if you have downloaded a different version than what was assigned to you in the MyNVivo or MyLumivero portal.
To address the problem, make sure you install the correct version of NVivo for your license.

If you were provided with a license key, the numbers in the first 5 characters of the key indicate the version (with the exception of NVivo 13/R1 which shows "20" rather than "13")

NVivo can be downloaded from the Downloads Page (you will be required to sign in with your myNVivo username and password).

If you are using a license key that correctly corresponds to the version of NVivo you have installed, please copy and paste the license key into the first block.  NVivo will auto-fill the rest.