Are you referring to an icon on desktop to invoke thunderbird? Please clarify. Are you using Windows?

Thanks for your attention,

I used to use an icon on the desk top. now I try to always leave a Thunderbird tab open but I lost that weeks ago and can no longer get in. I'm using a mac mini. When I am trying to get into my Thunderbird Email. Something has changed. No matter what I do I get pages that are meant to be helpful or to promote something new with no links out of the page (that I can find) except to start over. I get something similar from Firefox sometimes unless I still have Firefox still open. That means I can.t do the periodic computer shutdown and restart. I'm sure that doesn't happen to everyone, so I'm missing something somewhere. Email is vital as id verification to get into everything else if there is a password problem and that has snowballed into a real problem.

Thanks again for your assistance.

Chuck

I do not know Mac, but I did a quick web search and found this AI solution. I hope it works for you.

Changing Desktop Icons on Mac Steps to Change Icons

   Find a New Icon
       Search for an image online or use one saved on your computer.
       Supported formats include .JPG, .PNG, and .SVG.

   Copy the New Icon
       Right-click the image and select "Copy."
       If using Preview, click "Edit" and then "Copy."

   Access the Get Info Menu
       Locate the app, folder, or file on your desktop.
       Right-click it and select "Get Info."

   Replace the Icon
       Click the current icon in the Get Info window to highlight it.
       Press Command + V to paste the new icon.
       The icon should change immediately.

Restoring the Original Icon

   If you want to revert to the original icon, open the Get Info menu again, click the icon, and press the Delete key.

Creating Shortcuts (Aliases) Steps to Create a Shortcut

   Locate the File or Folder
       Use Finder to find the file, folder, or application.

   Create an Alias
       Go to File > Make Alias or right-click and select "Make Alias."
       Alternatively, press Control + Command + A.

   Move the Alias to Desktop
       Drag the alias to your desktop for easy access.
       You can rename it by selecting the alias and pressing Enter.

These steps will help you customize your desktop icons and create shortcuts for quick access on your Mac.

At this point my password also doesn't work. I have a notice that I need to setup my existing email address. I didn't do that myself the first time and that was decades ago. I got an advertisement for a new email version a few weeks ago. Maybe it is mandatory. but this problem has been building for a long time.

That latest response indicates you don't have Thunderbird working at all, seeming to contradict your prior post. Very confusing.