October 16, 2017
[Solved]ERR_SPDY_INADEQUATE_TRANSPORT_SECURITY issue in OWA
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I am currently using Exchange 2016 CU 4 as of the below version. Few days back my server was working fine and was easily reachable from inside as well as outside domain. on the point I have even used the certificate from DigiCert for SSL verification. Suddenly today I found that ERR_SPDY_INADEQUATE_TRANSPORT_SECURITY issue in OWA