[Mike]

Problem is that your hoster isn’t using any ciphers that are supported with Windows 2012 or 2008 R2 or 2008 R1 servers. https://docs.microsoft.com/en-us/windows/desktop/secauthn/tls-cipher-suites-in-windows-8

We do have TLS 1.2 enabled. I would say that TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 needs to be added to your hosts cipher list, it’s the highest that 2008r2/2012/2012R2 can go to.

Either that or have the App use a different engine such as Firefox or Chrome, as IE outside of Server2016/Win10, doesn’t support TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384

[Mike]

Previous versions were working, till the recent certificate/website issues started…

I seem unable to find your ticketing system, or it’s closed so it’s hidden maybe.

[Mike]

We are also having the license activation problem. System log of the server is also reporting a Schannel Error. Seems to me there’s a cipher negotiation issue. Ours is a Windows 2012 system, but we’ve used IISCrypto to clear out dead/bad ciphers, and disable 3DES, but there are plenty of other ciphers to use. Just ran a check via https://www.ssllabs.com/ssltest/analyze.html?d=theucguys.com, looks like you’ve killed supportability for IE11 unless running on Windows 10/Server 2016.

[Author]

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