SUMMARY If I want to use thunderbird as a default email client, I need to set thunderbird as the default email provider I've thunderbird installed on my PC Windows 10, in C:\Program Files (x86)\Mozilla Thunderbird directory When I click on the search button and select the right folder ( the file type is knonw as thunderbird ) I cannot select thunderbird.exe file
*** This bug has been marked as a duplicate of bug 406815 ***
Fixed with #406815 and not reproducible with 6.2.0