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  • andywilde 25 posts 66 karma points
    Sep 20, 2018 @ 09:38
    andywilde
    0

    Recaptcha with TLS 1.2

    We have recently removed TLS 1.0 and 1.1 from our production server (in accordance with PCI guidance). TLS 1.2 is enabled.

    We are now getting the following error when submitting forms with the recaptcha v2 field included.

    'The client and server cannot communicate, because they do not possess a common algorithm'

    We are using Umbraco version 7.12.2

    Umbraco project is compiled using framework 4.6.1 (which I understood uses highest encryption version available).

    What am I missing?

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  • Alex Skrypnyk 6163 posts 24143 karma points MVP 8x admin c-trib
    Oct 02, 2018 @ 14:13
    Alex Skrypnyk
    0

    Hi Andy

    Did you solve the issue? Please, share with us

    Alex

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  • andywilde 25 posts 66 karma points
    Oct 10, 2018 @ 08:45
    andywilde
    101

    We reapplied TLS 1.1 and recaptcha worked OK.

    We have since removed 1.1 (leaving TLS 1.2 only) and it is still working.

    As far as I am aware nothing else has changed.

    Complete mystery ?????

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