Of course, the first thought is to check the certificate that the service is presenting.ĭuring the TLS handshake, when the secure channel is established for HTTPS, before any HTTP traffic can take place, the server is presenting its certificate. The remote certificate is invalid according to the validation procedure. In some situations, the ASRS clients or the hubs could no longer connect to the service, with an error like: ERROR Failed to connect to ' ', will retry after the back off period.Įrror detail: Unable to connect to the remote server.
On 2020 August 19 th, the Azure SignalR Service rotated (renewed) the authenticating certificate used by its endpoints. A common cause: the certificate presented by the server endpoint fails the validation the client does not trust the certificate presented by the server. Sometimes our client apps, including browsers, are unable or unwilling to connect to an HTTPS site.
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