Win-acme: Authorization issue

[cinadr]

HI!

I'm not sure what the problem is, but http01 authorization fails with both 1.9.3 and 1.9.1.

I can reach my the auth file url on my mobile phone through 4G and with my neighbor wifi (different IP). And I tested all my auth urls of each SAN with remote testing sites and all opened correctly.
All my sites are working through ipv4 and ipv6.

Probably letsencrypt servers have some DNS issues? Anybody?

[sschiffel]

Here the same. Any solution for that error?

[sschiffel]

ok it was my personal incompetence. I had enabled debug logging for letsencrypt-win-simple described here. This will print a LetsEncrypt API link that will return a json with further details. It seems letsencrypt takes ipv6 as default transport protocol (as it described in RFC3484) seen in "addressUsed" value, but i had a mistake in the AAAA record in my zone, so it pointed to a wrong server that returns 404.

[cinadr]

Same here. I had a ipv6 firewall rule that has an old ip caused packets to drop while authenticating. Thanks for the response, it helped me to find the root of my problem.