If you have any difficulties with the licensing or installation of System Mechanic: 1. Ensure that your computer is connected to the internet and that no firewall, security, or parental control programs are blocking outgoing access.
2. Double-check the values you entered for the Activation Key, making sure that no spaces are entered and that all letters and numbers are entered exactly as shown. 3. Some characters in the Activation Key (such as the number 0 and the letter O) can look very similar. Try double-checking the following: the letters O, l (lower-case L), I (capital i); and the numbers 0 (zero) and 1 (one).