Tuesday, June 11, 2019

Firefox Connection Error: NS_ERROR_NET_INADEQUATE_SECURITY secured https sites not working

Issue: Updated Firefox to latest version i.e. version >= 36 
http/2 is enabled by default since >=36 and which is causing a lot of https web-sites not working properly and throwing insecure connection exception.


Solution:
  1. type about:config in the address bar of firefox tab
  2. Click on I accept the risk button
  3. Search for "http2" in search box
  4. Disable configuration "network.http.spdy.enabled.http2" by double clicking it.



Screen Shot 2018-10-21 at 10.08.40 PM

It will definitely help you - if you have enabled HTTP2 or upgraded firefox >=36.


References:
https://github.com/bradfitz/http2/issues/29
https://anandthearchitect.com/2018/10/22/firefox-error-code-ns_error_net_inadequate_security/

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