Certify SSL Manager manage free https certificates for IIS

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

Summary Screenshot

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

The app is free for a limited number of managed certificates per server. If you want to manage many certificates (or you just want to support development) you can purchase an upgrade key.

Certify SSL Manager is used by more than 70,000 people and organisations around the world, including:


Version 4.1.8

Latest stable release
Download 4.1.8

Minimum Requirements: Windows Server 2008 R2 SP1 (64-bit) or higher with .Net 4.6.2 or higher.

Digitally Signed as Publisher 'Webprofusion Pty Ltd'

File SHA256 as generated by certutil -hashfile SHA256: 80408a62057c2a274154eddcf6599b82c75c8b153f0708b6aeadbd55ec7620b4

V4.1.8: Released 2020/03/04
  • Feature: Ctrl+Click Renew All button to force renewal even for current certificates
  • Feature: CLI --force-renewal flag
V4.1.7: Released 2020/02/22
  • Feature: you can now use Cloudflare API tokens instead of Email + Authkey credentials for the Cloudflare DNS provider.
  • Fix: DNS Providers now all support a custom setting for propagation time. Use this if the default doesn't allow enough time for TXT record propagation across your DNS nameservers.
  • Fix: Resolved issue with error related to 'invalid anti-replay nonce' when resuming certificate order with a large pause for DNS updates/propagation.
  • Fix: Resolve UI concurrency issue when tracking many simultaneous renewals
  • Fix: Restored ability to migrate manageditems.json to newer database (for upgrading v2.x users).
  • Plus miscellaneous smaller bug fixes and UI text updates

Please backup your c:\programdata\certify\ folder before updating between major versions.


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.

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