Interface: nuanceimagingDownload fails, getting errror: the signature of this file is corrupt or invalid" Method 1: Disable software with invalid signature to run in Internet Explorer a) Open Internet Explorer browser from Desktop. b) From the menu bar select Tools SelectInternet Options. c) In the Internet Options window, select Advanced tab. d) Scroll down and un-check the Allow software to run or install even if the signature is invalid e) Click OK to save the settings. Then close the Internet Options window. If the issue persists, try resetting the Internet Explorer and check if the issue persists.