Internet Explorer Users Please take note, you may see the following error:

Note, The signature was never corrupt or even invalid. Microsoft released a cumulative security update KB3140745 for Windows 10 that deprecated support for SHA1 code signing certificate. Any programs signed with SHA1 certificate after January 1st, 2016 will be flagged as an invalid signature

Resolution or workaround :

Use a different browser, Firefox or Chrome, or using Internet Explorer, click on View Downloads (or press ctrl - J), error, Right click and select Run anyway

Invalid Signature Error