Since updating Thunderbird from 60.8 to 68.0 (both 32-bit) my batch script, which is supposed to open a new email form and fill in some data, doesnt seem to work anymore. Here is the script: "C:\Program Files (x86)\Mozilla Thunderbird\thunderbird.exe" -compose "to=Test@Example.de,from=Test2@Example.de,subject=Example,body=ExampleBody,attachment=file:///C:/Test.txt" If I run this script an empty new email form appears. In 60.8 this form would be filled with the information from the batch script. This script works if I exclude the attachment attribute, but I need to attach it automatically. Has anything changed regarding command line arguments or am I doing something wrong here? Thank you in advance.