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


Create the record at TransIP. Note that this provider is not very fast updating its records after their API has accepted the changes, so it’s highly recommended to roughly double either PreValidateDnsRetryCount and/or PreValidateDnsRetryInterval in settings.json when using DNS validation through them.

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 requires you to activate the API in the “my account” section of the control panel and to create a key pair for win-acme.


  • Key inline --validation transip --transip-login xx --transip-privatekey ”—- PRIVATE KEY — …"
  • Key in file: --validation transip --transip-login xx --transip-privatekey C:\transip.key