A simple ACMEv2 client for Windows (for use with Let's Encrypt et al.)


Create the record in Cloudflare DNS.

Separate download

This plugin is offered as a separate download, which can be downloaded from the releases page on GitHub has to be unpacked into the folder where you also unpacked wacs.exe to able to use them. If you are using win-acme as a dotnet tool, you will have to unpack to %userprofile%\.dotnet\tools\.store\win-acme\{version}\win-acme\{version}\tools\net5.0\any

Note that after unpacking you may have to unblock all new .dll files before .NET will trust them. You can do that from the Windows File Explorer by using the right mouse button and then checking the Unblock box on the General tab.


Using a downloaded plugin

To verify that the plugin is properly installed you can start the main executable with --verbose and it will print information about found and loaded plugins at start up. When the plugin is loaded, it manifests itself as extra menu choices and command line parameters being made availalbe.

Requires pluggable release

This plugin requires to you use the pluggable release of the main executable. It will not work on the smaller trimmed releases.


This assumes you already have your DNS managed in Cloudflare; if not, you’ll need to set that up first. If you are using the Cloudflare DNS option for validation, you’ll need to obtain a Cloudflare API Token (not Key) that is allowed to read and write the DNS records of the zone your domain belongs to.

Create an appropriate API Token

  1. Navigate here:
  2. Click Create Token
  3. Choose a name
  4. Under Permissions, select “Zone”, “DNS”, “Edit”; Click Add More, select “Zone”, “Zone”, “Read”
  5. Under Zone Resources, select “Include”, “All zones” (or “All zones from an account” and select the relevant account).
    • Note that restricting access to the single target zone does not work, as we can not get the zone’s id by its domain name then. You might be able to exclude other zones specifically. If this is a show stopper for you please open an issue to discuss how to proceed.
  6. Finish creating the token, store it in a safe place or, better, paste it directly into win-acme.


--validation cloudflare --cloudflareapitoken ***