I have a number of customers who use my padlock-coded excel and the hardware-locked key I produced for them from their System ID has always worked fine.
As Activation Settings I use:
End users must enter an activation Key…
Use hardware-locked keys… with System ID
Application Master Key (unique)
I use no additional settings.
However with my latest customer, there is no way of getting the key to work after several trials with severals keys: Message: “Key not valid”. Both the System ID and the key were always copied and pasted by Clipboard on both sides.
One thing is special with this customer. He had no microsoft office installed. So I invited him to share one of my 5 Office 365 home licenses, as suggested and allowed by microsoft. He then had no problem with his free office 365 installation. He can open Excel.
But no way of opening my padlock-coded excel file!
What can I do to solve the problem?