Hi everyone, So i have a user , who has it seems , a broken mozilla thunderbird profile. User complained about thunderbird freezing up. She sent me a whatsapp screenshot when she opened up the program. It prompted her for a new name/username/password. My first instinct was to determine the location of the email data and make a backup copy of it which i did. appdata\roaming\thunderbird\herprofile folder+default folder + the .ini files. I have tried: -review her SSD - no bad sectors -review cpu temps - all normal -review memory - stable - no errors -copying the data away , remove thunderbird completely and reinstall it fresh after reboot. -did a new profile creation and could connect to her live mail servers. -afterwards did an edit of the .ini files to point to the correct folders ; the moment i do this , i am again prompted to setup a brand new name/username/password ; as if the process restarts. -what is interesting , is that when i modify the .ini files , her contacts are perfectly viewable ; thus they are correctly accessed from the profile folders. -i tried the trouble shooter and tried to change folders to the profile folders ; no change. Out of pure desperation , i did an mbox to PST conversion , and luckily , all of her mail was perfectly exported to pst. She is now on outlook but it it is a dated version. She wants her thunderbird working. The app is on the latest version and as a test , i even did a n-1 version download to test - no success. It is just as if thunderbird is not happy to accept the actual mail content itself ; it just bounces back to the setup prompts of a new account. IF you complete it , the old data is never presented. I have also tried thunderbird.exe -p ; to make a new profile from there but no go there as well. Any ideas? Any suggestions?