Internet Explorer shows valid certificate as "corrupt or invalid signature"

internet-explorer certificate installation signature
Dejan Maksimovic picture Dejan Maksimovic · Sep 19, 2013 · Viewed 17.5k times · Source

We have signed our product installation using SignTool.exe and GoDaddy certificate, and our signature appears valid in windows and using "verify" option of SignTool. However, when the file is downloaded in Internet Explorer 9, it reports that "The signature of is corrupt or invalid".

We obviously don't want our users to have problems with installation of our setup, so I need help in fixing it. Strange that there is basically no help on this issue online.

Answer

user3114639 picture user3114639 · Feb 1, 2016

Microsoft released a security update on January 12th 2016. This update has changed the way Windows enforces authenticode code signing and timestamping.

If your code signing certificate has a SHA1 signature, anything signed with such a certificate after the end of 2015 was being flagged as an invalid signature. So you will need to have your certificate re-issued to meet the new requirements.

Take a look at this article: Renew your Windows code signing certificates by December 31, 2015.

Related questions

Hide scroll bar, but while still being able to scroll

I want to be able to scroll through the whole page, but without the scrollbar being shown. In Google Chrome it's: ::-webkit-scrollbar { display: none; } But Mozilla Firefox and Internet Explorer don't seem to work like that. I also tried this …

Read More
What does <meta http-equiv="X-UA-Compatible" content="IE=edge"> do?

What's the difference if one web page starts with <!DOCTYPE html> <html> <head> <meta http-equiv="X-UA-Compatible" content="IE=edge"> and If page starts with <!DOCTYPE html> <html> <…

Read More
How to downgrade from Internet Explorer 11 to Internet Explorer 10?

As a developer, I found the new Internet Explorer version to be a complete nightmare. I turned the windows feature off, but I wasn't able to install Internet Explorer 10. It says that it's already installed which it is not. Is …

Read More