Caution - this is NOT a general release

See release notes above.

This is release is meant for Windows 2008 users who are unable to run the latest 2.1.x versions, but are forced to upgrade before November because Let's Encrypt will require POST-as-GET from that time. It lacks many bug fixes and quality of life improvements that were implemented in recent versions of the software. See this issue for more information: #1358.

To support Windows 2008 we have had to down-target from .NET Framework 4.7.2 to .NET Framework 4.6.1, which (for some very annoying technical reasons - dotnet/standard#567) means that we are not able to re-use accounts created using previous 2.0.x release. If you're upgrading from 2.0.x to 2.0.11, you therefor have to delete Registration_v2 and Signer_v2 from your ConfigurationPath.

This does not apply to users migrating from 1.9.x, they will create a new account at the ACMEv2 server anyway.