Certify the web manage free https certificates for IIS

The SSL Certificate Manager for Windows, powered by Let's Encrypt

Easily install and auto-renew free SSL/TLS certificates from letsencrypt.org for your IIS server. Setting up https has never been easier.


Download 2.1.18

View Release History

V2.1.18 : Released 2017/10/18
  • Only perform DNS checks in test/preview mode
  • Bug fixes
V2.1.15 - V2.1.17
  • Fix for settings not being preserved between app version updates. Please review your current app settings after this update.
  • New setting to optionally disable DNS checks
  • New advanced options ( contributed by Marcus Lum)
    • Post-Request Web Hooks (report success/fail to your own API)
    • Revoke Certificate option
    • New tls-sni-01 challenge support
    • DNS CAA & DNSSEC checks
  • Updated pre-request config checks
  • UI Updates
  • Bug fixes

File SHA256 as generated by certutil -hashfile SHA256: 3dee4ffe744f6db9dd6c155264be9e1fb0bfbad9d687cac6a1b59c0c8c25e36f

Note: The app is free for up to 5 managed sites per server. If you want to manage more than 5 sites (or you just want to support development) you can purchase an upgrade key.


This software is provided "as is", without warranty of any kind, express or implied, including but not limited to the warranties of merchantability, fitness for a particular purpose and noninfringement. In no event shall the authors or copyright holders be liable for any claim, damages or other liability, whether in an action of contract, tort or otherwise, arising from, out of or in connection with the software or the use or other dealings in the software.

Got feedback?
Email Us or file issues on GitHub

Note: Our app is Open Source (https://github.com/webprofusion/certify) and uses the cool ACMESharp PowerShell project by Eugene Bekker and ACMESharp contributors which is licensed under MPL 2.0