FireFox gets ns_error_net_interrupt when clicking on loaded page

Question

FireFox is connecting to my website, but accessing already visited pages would randomly not connect resulting in a

Secure Connection Failed

Chrome and Microsoft Edge are not having that problem.

What is strange is that reloading the page is also not working. I need to force reload the page by way of using Shift and reload - and then I get the page back, and will always load when using shift and reload.

How can I prevent this from happening?

The html pages are pre-compresses Brotli files served by an Apache 2.4.57 server.

<IfModule mod_expires.c>
    ExpiresActive On
    ExpiresDefault                  "access plus 1 day"
    ExpiresByType text/asp          "now"
    ExpiresByType text/html         "now"
    ExpiresByType text/css          "access plus 1 day"
    ExpiresByType video/x-m4v       "access plus 15 days"
    ExpiresByType image/jpg         "access plus 5 days"
    ExpiresByType image/jpeg        "access plus 5 days"
    ExpiresByType image/gif         "access plus 5 days"
    ExpiresByType image/png         "access plus 5 days"
    ExpiresByType application/pdf   "access plus 1 month"
    ExpiresByType text/x-javascript "access plus 1 month"
    ExpiresByType application/x-shockwave-flash "access plus 1 month"
    ExpiresByType image/x-icon      "access plus 1 month"
</IfModule>
<FilesMatch "\.(html)$">
    FileETag None
    <IfModule mod_headers.c>
        Header unset ETag
        Header set Cache-Control "max-age=0, no-cache, no-store, must-revalidate"
        Header set Pragma "no-cache"
        Header set Expires "access plus 3 hours"
    </IfModule>
</FilesMatch>

I am using these default Connection Settings in FireFox:

SSL info when the connection is not made and I get a ns_error_net_interrupt error:

SSL info after reloading that same page (using Shift and reload) -- it works again:

score 1 · Accepted Answer · answered Aug 26 '23 at 19:43

It seemed like FireFox did not like to reconnect onto pages that expired.

    ExpiresByType text/asp          "now"
    ExpiresByType text/html         "now"

When changing it to

    ExpiresByType text/asp          "access plus 3 seconds"
    ExpiresByType text/html         "access plus 3 hours"

things started working.

FireFox gets ns_error_net_interrupt when clicking on loaded page

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