ACMEv2 protocol client for generating certificates using Let''s Encrypt (or other ACMEv2 compliant CA)

This is a custom build intended allow compatibility with .NET 4.6.1. It should not be used with PowerShell Core and you should only attempt to use RSA based key options.

Minimum PowerShell version


Installation Options

Copy and Paste the following command to install this package using PowerShellGet More Info

Install-Module -Name Posh-ACME.net46

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Manually download the .nupkg file to your system's default download location. Note that the file won't be unpacked, and won't include any dependencies. Learn More


Ryan Bolger


(c) 2018 Ryan Bolger. All rights reserved.



LetsEncrypt ssl tls certificates acme


Get-DnsPluginHelp Get-DnsPlugins Get-KeyAuthorization Get-PAAccount Get-PAAuthorizations Get-PACertificate Get-PAOrder Get-PAServer New-PAAccount New-PACertificate New-PAOrder Publish-DnsChallenge Remove-PAAccount Remove-PAOrder Save-DnsChallenge Send-ChallengeAck Set-PAAccount Set-PAOrder Set-PAServer Submit-ChallengeValidation Submit-OrderFinalize Submit-Renewal Unpublish-DnsChallenge




This module has no dependencies.

Release Notes

* Route53 plugin now has IAM Role support if you're running Posh-ACME from within AWS. See plugin usage guide for details (#128)
* Dynu plugin migrated to v2 of the Dynu API
* Fixed DNSPlugin and DNSAlias arrays not getting expanded properly when the number of names in the cert didn't match the values in those arrays.
* Fixed validation bugs when using SAN certs with challenge aliases or multiple different plugins (#127) (Thanks @whbingham)
* Revamped serialization/deserialization for plugin arguments which should prevent accidentally creating parameter binding conflicts when switching between parameter sets for a particular plugin (#129).

Version History

Version Downloads Last updated
3.3.0 (current version) 11 3/24/2019
3.2.1 16 3/4/2019
3.2.0 20 1/22/2019
3.1.1 539 12/22/2018
3.1.0 4 12/16/2018
3.0.1 29 11/30/2018
3.0.0 28 11/13/2018
2.9.1 7 10/26/2018
2.9.0 11 10/6/2018
2.8.0 148 9/12/2018
2.7.1 4 8/30/2018
2.7.0 12 8/12/2018
2.6.0 3 8/1/2018
2.5.0 10 7/13/2018