Question

I am unable to view the wiki site from my new Windows 11 machine in either Edge or Firefox. Fortunately it works on my Windows 10 machine.

I've tried everything I can think of including disabling AVG.

Any ideas?

Update: May 5th 2023
Disabling IPV6 in Firefox or Edge did not "fix" the issue.

Comments

I don't think it is a certificate problem, as no certificated is being served, in fact nothing is being sent back in response to the request as far as I can see!

The website is knackered!

Same with the Help Desk, so basically no support from Teltonika, wish I hadn't bought one now, no support and no manual!

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This is what Firefox come up with:

Interestingly, again on the same new Windows 11 machine, Chrome works fine.

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This seems to be an IPv6 only issue, the website works fine when using IPv4.

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I am IPv4 only, showmyip.com, says IPv6 Not found.

The Vivaldi browser does work for me though, Chrome, Opera, Edge and Firefox say no.

It may well be a certificate issue, perhaps something now considered insecure by some browsers, although via Vivaldi it looks to be a valid certificate from Let's Encrypt, and I cannot see any obvious difference between that and another site with a Let's Encrypt cert.

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Humm works for me for chrome brave firefox from a IPv4 only site. On a site with IPv4 + IPv6 chrome fails firefox and brave succeed. Same PC in both cases (running Fedora 38).

Go figure!

Edit: this may be related to the MTU of one interface / IP fragmentation - defragmentation somewhere in the path. Have you seen a similar behavior when using other websites ?

Answer 1

Don't know the reason