Knowledge base KB0208

The signature of this program is corrupt or invalid


When I try to download think-cell with Internet Explorer, I receive the following message:

signature invalid error message


The cause is most likely in some local configuration with regard to which digital certificates your machine trusts. To the best of our knowledge, our installers are correctly signed and also comply to the changes Microsoft made.


Please review (or have your IT review) the certificate settings on the machine. If your IT believes everything is in order, please do not hesitate to contact our support team and include details about the error message (which you should be able to see by clicking Learn more).

Alternatively, you may try another browser such as Firefox or Chrome to download think-cell.