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 4.0.12

Latest stable release
Download 4.0.12

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: 3be4c4d9b30d7764301807373e56d67082edf005b7a889fdb7d2ce6094d2c5a9

V4.0.12: Released 2018/12/04
  • Important: Changed behaviour of Static IP and unassigned hostname binding deployment
  • Fix replacing of previous certificate based on thumbprint matching
  • Fix to ignore stale option selections if Auto deploy/auto-binding selected
  • Various fixes and updates
V4.0.11: Released 2018/11/28
  • Important: Fix for an issue with Account Key decoding which causes invalid challenge response validation for some users (affects all 4.x users)
  • Logging updates and additional fixes
V4.0.10: Released 2018/10/11
  • Important: Fix issue with binding not being updated to latest certificate (bug from v4.0.9)

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


Latest beta release
Download 4.1.0-beta3

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'

V4.1.0-beta3: Released 2018/12/21
  • Updated: Microsoft DNS API Provider (contributed by AJ Henderson)
  • Several small UI usability tweaks
V4.1.0-beta2: Released 2018/12/18
  • Incremented minor version to 4.1 for new features
  • New: support for acme-dns (CNAME redirection service: https://github.com/joohoi/acme-dns) for DNS challenges
  • New: Microsof DNS API Provider (contributed by AJ Henderson)
  • Enhanced error reporting UI for service startup
  • Test results now support copy on click for copy/paste usage
  • Bug fixes
  • Note: 4.1.0-beta1 had an issue related to setting acme-dns config
V4.0.13-beta4: Released 2018/12/14
  • Fix additional account key signing issues (json serialization)
V4.0.13-beta3: Released 2018/12/13
  • New: certificate store cleanup modes in Settings including Full Cleanup
  • Account key hashing fixes - some users could not complete challenges
  • Fix multi/mixed challenge matching
  • Fixes for GoDaddy DNS API provider
  • UI & Validation updates
  • Logging Á stability fixes


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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