14 Nov. I have been unable to solve the problem of needing to sign in to Thunderbird using Google. I have gotten myself into some trouble, and almost got scammed by trying to get help from on line providers to accomplish this. Some Dell technicians have the suspicion that my version of Thunderbird may be corrupted. I am going to take my Dell desktop to a computer shop tomorrow. I am hoping they will install a new form of Thunderbird onto an external computer, and then let me try to log in to Thunderbird on that version. If that works, then it will be an indication that the version I have been using on my Dell desktop is corrupted. The plan in that case would be to have the technician transfer all my Thunderbird data to the new version of T-bird on the external computer. Then he could install a new, fresh version of T-bird on my computer. Finally, he could attempt to return all my Thunderbird data from the external computer back onto the new version of T-bird on my computer. I am afraid that my Local Folders and their contents will not be transferred back to Thunderbird on my computer. I'm afraid that all my local folders will be lost. I'm not sure whether the technician will have to make a Thunderbird-Profile_back up before he removes the Thunderbird data from my computer. We'll see.