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Re: Let's Encrypt certificate not valid for Android 7 and older #7039,Closed

From David Higton <dave@davehigton.me.uk>
Newsgroups comp.mobile.android
Subject Re: Let's Encrypt certificate not valid for Android 7 and older #7039,Closed
Date 2026-05-04 16:15 +0100
Organization Home
Message-ID <f157c1d35c.DaveMeUK@BeagleBoard-xM> (permalink)
References <10t7h14$39a8r$1@paganini.bofh.team> <10t7inf$2u14c$1@dont-email.me> <slrn10vgm9c.alc.apple.universe@freight.zombinet>

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In message <slrn10vgm9c.alc.apple.universe@freight.zombinet>
          Eric Pozharski <apple.universe@posteo.net> wrote:

> with <10t7inf$2u14c$1@dont-email.me> Chris wrote:
> > Jakub <jak74@interia.pl> wrote:
> 
> > > android Let's Encrypt certificate not valid for Android 7 and older how
> > > to fix it?
> > Upgrade to newer Android version. Certificates are well known for not
> > being supported on older OSes with are out of support which is the point
> > of the certificate. 
> 
> Not exactly.  What happened is the certificate (by other CA;  don't ask,
> long time ago and it's irrelevant now) that signed the certificate of
> letsencrypt (eons ago) has timeouted.  Letsencrypt managed to do resign
> with newer.
> 
> Unfortunately, A7 doesn't have it (namely: 'ISRG Root X1').  Adding it to
> keyring would last another decade.  Unfortunately, to do this A7 must be
> rooted.  So upgrade is the only option.

This is a naive suggestion, i.e. I don't know for sure whether it will or
will not work; but, when I get certificates, there's a "fullchain.pem"
file that contains my own cert and all the rest of the necessary chain,
I think.  May be worth a try.

David

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Thread

Let's Encrypt certificate not valid for Android 7 and older #7039,Closed Jakub <jak74@interia.pl> - 2026-05-03 15:02 +0200
  Re: Let's Encrypt certificate not valid for Android 7 and older #7039,Closed Chris <ithinkiam@gmail.com> - 2026-05-03 13:31 +0000
    Re: Let's Encrypt certificate not valid for Android 7 and older #7039,Closed Eric Pozharski <apple.universe@posteo.net> - 2026-05-04 08:30 +0000
      Re: Let's Encrypt certificate not valid for Android 7 and older #7039,Closed David Higton <dave@davehigton.me.uk> - 2026-05-04 16:15 +0100
        Re: Let's Encrypt certificate not valid for Android 7 and older #7039,Closed Theo <theom+news@chiark.greenend.org.uk> - 2026-05-05 13:38 +0100
          Re: Let's Encrypt certificate not valid for Android 7 and older #7039,Closed Andy Burns <usenet@andyburns.uk> - 2026-05-05 13:57 +0100
            Re: Let's Encrypt certificate not valid for Android 7 and older #7039,Closed Arno Welzel <usenet@arnowelzel.de> - 2026-05-06 15:52 +0200
              Re: Let's Encrypt certificate not valid for Android 7 and older #7039,Closed Maria Sophia <mariasophia@comprehension.com> - 2026-05-06 11:01 -0600
                Re: Let's Encrypt certificate not valid for Android 7 and older #7039,Closed Arno Welzel <usenet@arnowelzel.de> - 2026-05-07 08:36 +0200
                Re: Let's Encrypt certificate not valid for Android 7 and older #7039,Closed Eric Pozharski <apple.universe@posteo.net> - 2026-05-10 01:03 +0000
        Re: Let's Encrypt certificate not valid for Android 7 and older #7039,Closed Eric Pozharski <apple.universe@posteo.net> - 2026-05-05 10:34 +0000
        Re: Let's Encrypt certificate not valid for Android 7 and older #7039,Closed Arno Welzel <usenet@arnowelzel.de> - 2026-05-06 14:52 +0200
  Re: Let's Encrypt certificate not valid for Android 7 and older #7039,Closed Arno Welzel <usenet@arnowelzel.de> - 2026-05-04 11:59 +0200

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