Code Signing Certificates

A code signing certificate allows you to digitally sign your files, securing them against tampering while providing reputation with Microsoft's SmartScreen filter and completely eliminating the Unknown Publisher warnings that might be scaring off your customers.

OV Code Signing Certificates

For Companies and Independent Developers

1 Year
2 Year
3 Year
  • Supports all versions of Windows
  • NO Unknown Publisher warnings
  • Aides in SmartScreen Reputation
  • Secure token available
  • Deployment to compatible HSM hardware available
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EV Code Signing Certificates

For Companies

1 Year
2 Year
3 Year
  • Supports all versions of Windows
  • NO Unknown Publisher warnings
  • INSTANT SmartScreen Reputation
  • Driver signing for Windows
  • Secure token available
  • Deployment to compatible HSM hardware available
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Need help deciding which type of certificate is right for you?

Read our EV vs OV Code Signing help page.

If you find a lower published price for a comparable code signing certificate we will beat it if you email us. Check out our great prices on web server SSL certificates too!

K Software is both a Sub-CA and Sectigo Strategic Partner, which means we sell genuine Sectigo products and all of our certificates are completely trusted on virtually all platforms. The discounts we offer come from our volume purchasing capabilities and we pass that discount on to you! Our code signing certificates are backed by an industry-leading guarantee. Please see our refund policy for the details.


  • Window Microsoft Authenticode - ALL versions of Windows - Code Sign any Microsoft format (32 and 64 bit) EXE, DLL, OCX, MSI, CAB.
  • Java Java Code Sign any JAR applet
  • Office Microsoft Office Code Sign any MS Office Macro or VBA (Visual Basic for Applications) file.
  • Window Windows 10/11 Driver Signing with an EV Code Signing Certificate

Driver Signing

OV Code Signing Certificates can be used for kernel-mode driver signing for Windows XP - Windows 8.1. Please note that this ONLY applies to kernel mode driver signing. OV certificates work perfectly well on Windows 10 for all other types of signing!

EV Code signing certificates are required for kernel-mode driver signing in Windows 10.

For more general driver information, see this article in our knowledgebase

For more general information on EV verus OV level certificates, see this article in our knowledgebase


You can order a new code signing certificate through K Software and take advantage of our discounted price even if you've ordered from Sectigo or any other CA in the past.

There is no special renewal process if you've purchased a certificate in the past. Place a new order using the same company information and the validation process should go much faster than your first order. All documentation is considered valid for 39 months. Even if you ordered outside that time frame your re-order will be faster. Be sure to quote your previous order number in any correspondence with Sectigo.

The certificate period starts from the issuance date of your new certificate - any time left on your old certificate won't be added to the new one. Because of that it is a good idea to order your new certificate a few weeks or less in advance of your expiration date (we'll email you to remind you).


Download kSign

K Software's FREE Point and Click Code Signing Utility

Read the kSign tutorial here.

kSign will sign any number of files with your code signing certificate and comes with everything you need - no SDK or additional downloads required. Best of all - it's FREE!

Download kSign Now

kSign was written specifically for customers that have purchased code signing certificates through K Software. If you didn't purchase your certificate through K Software you can still use kSign for free but you'll be taken back to this website when the software signs a file.


Not Convinced you need a code signing certificate?

A digital signature from an OV certificate won't guarantee your software isn't flagged by SmartScreen but signing helps ensure that your software's reputation can be recognized for everything you sign. A signature from an EV code signing certificate provides instant SmartScreen reputation and prevents the warning from ever appearing.


No Signature Means Unknown Publisher,
Don't Scare Your Customers!


With a Code Signing Certificate & Digital Signature
- No Warnings!

What is a Code Signing Certificate?
What are the requirements to obtain an OV or EV code signing certificate?
The truth about SHA1, SHA-256, dual-signing and Code Signing Certificates.
Who can get a Code Signing Certificate?
How much does a Code Signing Certificate cost?
Is there a free trial for a Code Signing Certificate?
What is the order procedure for a Code Signing Certificate?
What is this "FILE is not commonly downloaded and could harm your computer" message? (SmartScreen)
How long does it take to get a Code Signing Certificate?
What happens when my Code Signing Certificate expires?
What is a timestamp and how do I use one with code signing?
Will a Code Signing Certificate get rid of the Unknown Publisher warning my users are seeing?
How do I export my Code Signing Certificate from Internet Explorer, Chrome or Safari on Windows?
How do I export my Code Signing Certificate from Firefox?
How do I export my Code Signing Certificate from Safari?
How do I use kSign to digitally sign files with my code signing certificate?
How do I sign a VBA Macro in MS Office with a timestamp?
How do I use a Kernel Mode Driver Signing Certificate to sign driver files?
kSign End User License Agreement (EULA)
kSign Uninstall Instructions

Get your Code Signing Certificate Today

K Software has been providing affordable security certificates to developers for almost 15 years. Our code signing and SSL certificates are fully trusted on all modern Windows platforms (with legacy certificates for XP available) and most mobile platforms, MS-Office, Java, Flash and Adobe. Buy with confidence!

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