Microsoft has been experiencing product activation issues for several months, and the following message appears during telephone activation:
Fortunately there is still the telephone activation, where you can do the activation by telephone and we will provide you with the instructions. If Internet Activation fails, go back and select Phone Activation. The following window appears:
Do not be irritated by this message and look only at the installation ID in point 2. There you will find several blocks with 6 or 7 digits. So just count through how many digits a block has and then dial the following phone number: 0800 2848 283
Afterwards you will be asked for the installation ID and after entering it you will receive a confirmation ID, which you can enter again in the window in the blocks A-H.
Should you require further information, please do not hesitate to contact us at +49 800 1100077 contact.