Does it help if you reset printing? Help/Troubleshooting Info, Clear saved print settings (bottom of tab).

I have deleted the printer and reinstalled it. No changes. Also deleted saved print setting in Thunderbird. No effect. The same symptom has now occurred in our office too, where we use Linux too. So printing is no longer working on 5 different machines.

Hello

For information purposes, another path to print. From Thunderbird 102, printing using the system dialog without preview now supported; Set print.prefer_system_dialog to true.

Can the preference, print.prefer_system_dialog, be useful to you.

You can try. 1 - Go to configuration editor https://support.mozilla.org/en-US/kb/config-editor 2 - Enter a search term print.prefer_system_dialog You can double-click on the preference to set the value to true

Setting this parameter Thunderbird hangs on opening the printing dialog. Unsetting (false) it hangs on printing

One other piece of information: Printing is also not working anymore in Firefox 140.5.0esr (64-bit). Same symptom: When starting printing e.g. a web page, Firefox loops and must be killed