Solution: Client with the currently selected authenticator does not support any combination of challenges that will satisfy the CA

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Hi @davidshoda,

Seems a couple of days:

Over the next 48 hours we will be building a list of vulnerable providers and their associated IP addresses. Our tentative plan, once the list is completed, is to re-enable the TLS-SNI-01 challenge type with vulnerable providers blocked from using it.

For more info check this pinned post 2018.01.09 Issue with TLS-SNI-01 and Shared Hosting Infrastructure

Cheers,
sahsanu

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