[GH-ISSUE #107] Chrome reporting ERR_SPDY_INADEQUATE_TRANSPORT_SECURITY #59

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opened 2026-02-25 22:32:30 +03:00 by kerem · 3 comments

kerem commented

2026-02-25 22:32:30 +03:00

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Originally created by @x2rider on GitHub (Jan 8, 2019).
Original GitHub issue: https://github.com/FiloSottile/mkcert/issues/107

A search on this error reports:
A deployment of HTTP/2 over TLS 1.2 SHOULD NOT use any of the cipher suites that are listed in the cipher suite black list.

I'm not sure how to change the cipher, or possibly the cipher order.

Is there something I can to do, to fix this?

Originally created by @x2rider on GitHub (Jan 8, 2019). Original GitHub issue: https://github.com/FiloSottile/mkcert/issues/107 A search on this error reports: A deployment of HTTP/2 over TLS 1.2 SHOULD NOT use any of the cipher suites that are listed in the cipher suite black list. I'm not sure how to change the cipher, or possibly the cipher order. Is there something I can to do, to fix this?

kerem

2026-02-25 22:32:30 +03:00

closed this issue
added the
TLS stack issue
label

kerem commented

2026-02-25 22:32:30 +03:00

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@adamdecaf commented on GitHub (Jan 8, 2019):

What version of chrome are you using?

@adamdecaf commented on GitHub (Jan 8, 2019): What version of chrome are you using?

kerem commented

2026-02-25 22:32:30 +03:00

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@FiloSottile commented on GitHub (Jan 8, 2019):

This sounds almost certainly like an issue with the HTTPS server implementation you are using, not with the certificate mkcert generated. mkcert has no control over the cipher suites your TLS implementation uses.

If it works with any other certificate, please reopen the issue.

@FiloSottile commented on GitHub (Jan 8, 2019): This sounds almost certainly like an issue with the HTTPS server implementation you are using, not with the certificate mkcert generated. mkcert has no control over the cipher suites your TLS implementation uses. If it works with any other certificate, please reopen the issue.

kerem commented

2026-02-25 22:32:30 +03:00

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@x2rider commented on GitHub (Jan 11, 2019):

I was able to fix the issue I was having by running the IIS Crypto 2 tool
https://appuals.com/fix-err_spdy_inadequate_transport_security/

@x2rider commented on GitHub (Jan 11, 2019): I was able to fix the issue I was having by running the IIS Crypto 2 tool https://appuals.com/fix-err_spdy_inadequate_transport_security/

kerem referenced this issue

2026-02-25 22:33:18 +03:00

[PR #59] [CLOSED] Fix use of multiple CAs on Linux #375