Code Signing Certificate FAQ

Frequently asked questions about code signing certificates

kSign Uninstall Instructions
To uninstall kSign, simply click the kSign program group and choose Uninstall. The default location for the Uninstall program is C:\Program Files (x86)\kSig...
K Software Privacy Policy
Privacy Policy of K Software LLC K Software LLC operates the https://ksoftware.net website, which provides the SERVICE. This page is used to inform websit...
kSign End User License Agreement (EULA)
END USER LICENSE AGREEMENT – kSign   Though you should read this entire EULA (and it is binding even if you don’t), here is the short version :   Your u...
What's the deal? Why are K Software's prices so low?
The code signing and web server SSL certificates we sell are completely genuine and exactly the same certificates you can get directly through Sectigo (form...
What are the requirements to obtain an OV or EV code signing certificate?
Documentation Requirements   A code signing certificate is an identity certificate. Because of that there is a validation process through which you will h...
Can I sign driver files (*.sys) with these certificates?
** Windows 10 now requires an EV code signing certificate for kernel mode driver signing. You can buy an EV code signing certificate from us here : https:...
How to fix the error message "One of the countersignatures is not valid. The file may have been altered."
The algorithm SHA1 has long since been deemed too weak to use and has been considered deprecated for quite a few years now. If you are seeing the message...
What happens when my Code Signing Certificate expires?
Code signing certificates are valid from 1 to 4 years. When your certificate expires only your ability to create new signatures is affected, past signatures...
The truth about SHA1, SHA-256, dual-signing and Code Signing Certificates
**PLEASE NOTE: As of May 30th 2020, SHA1 timestamping is effectively deprecated as the SHA1 roots have expired. Use only the SHA256 timestamp server from ...
What is a timestamp?
Put simply, a timestamp records when a signature was created. Because all code signing certificates expire it is important for any software verifying a digi...