Links within mail do not open the browser

[Alan Yorinks]

I just upgraded to Ubuntu 24.04. Selecting a link in an email no longer opens the link in Firefox. I ensured that Firefox is my default browser, and I set network.protocol-handler.app.http and network.protocol-handler.app.https to true.

I am using Thunderbird version 115.11.0 (64-bit) from Snap. Version 1

[Alan Yorinks (ayorinks)]

I have found a solution. I removed ~/snap/thunderbird/common/.thunderbird/8sbugc0d.default/handlers.json and restarted Thunderbird. The links are now working.

[Sebastien Bacher (seb128)]

Thank you for your bug report. DId you make a copy of that file before removing it? What handler was set in there?

[Paul Harrison (mythtv-paulh)]

I'm also seeing this problem with links not working and removing the handlers.json also fixed it for me.

This was my handers.json if it's useful.

{
   "defaultHandlersVersion":{

   },
   "mimeTypes":{
      "application/pdf":{
         "action":3,
         "handlers":[
            {
               "name":"Okular",
               "path":"/usr/bin/okular"
            }
         ],
         "extensions":[
            "pdf"
         ]
      },
      "image/tiff":{
         "action":0,
         "ask":true,
         "extensions":[
            "tif",
            "tiff"
         ]
      },
      "text/x-patch":{
         "action":4,
         "ask":true
      },
      "text/plain":{
         "action":4,
         "ask":true,
         "extensions":[
            "txt",
            "text",
            "pot",
            "brf",
            "srt"
         ]
      },
      "application/vnd.nokia.qt.qmakeprofile":{
         "action":4,
         "ask":true
      },
      "text/x-python":{
         "action":4,
         "ask":true,
         "extensions":[
            "py"
         ]
      },
      "application/vnd.openxmlformats-officedocument.wordprocessingml.document":{
         "action":4,
         "ask":true,
         "extensions":[
            "docx"
         ]
      },
      "text/x-log":{
         "action":4,
         "ask":true
      },
      "application/gzip":{
         "action":4,
         "ask":true,
         "extensions":[
            "gz"
         ]
      },
      "application/x-shellscript":{
         "action":4,
         "ask":true
      },
      "image/jpeg":{
         "action":4,
         "ask":true,
         "extensions":[
            "jpg",
            "jpeg",
            "jpe",
            "jfif",
            "pjpeg",
            "pjp"
         ]
      }
   },
   "schemes":{
      "https":{
         "action":2,
         "handlers":[
            {
               "name":"firefox",
               "path":"/snap/bin/firefox"
            },
            {
               "name":"Firefox Web Browser",
               "command":"env %u"
            }
         ]
      },
      "http":{
         "action":2,
         "handlers":[
            {
               "name":"firefox",
               "path":"/snap/bin/firefox"
            }
         ]
      }
   },
   "isSVGXMLAlreadyMigrated":true
}