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https://blog.it-kb.ru/2019/04/06/the-provided-signing-certificate-is-invalid-according-to-its-expiration-claims-in-sharepoint-2013-renew-self-signed-certificate-service-bus-and-workflow-manager/
Ошибка Workflow Manager "The provided signing certificate is invalid according to its expiration claims" в SharePoint 2013. Обновляем Self-Signed сертификат для служб Service Bus и Workflow Manager