Let's see if your data is still present.

Please go to "Help" (menu) > Troubleshooting information

Look down the left column of the first table until you see "Profiles". Click on "about:profiles" next to it.

The next screen will show you information about all your profiles. Identify the one that is in use. For each of the others, click on "Launch profile" and see if your data is there.

Hi Rick - thanks for your reply. I found data but if it is that what I had befopre is unclear top me. I exported my old data to an external drive but I cannot import them because the size oif the zip file is to large. Would be nice if you could give me an advice Thanks in advance Ralf

Hi Ralf,

Did you find and launch other profiles?

Hi Rick - I have saved the old Profil on an external drive but Thunderbird doesn´t import it. The Zip is to big and I don´t find it where I safed it - don`t know why Nothing makes sense to me

The easiest and best possible solution is finding the profile with your data using the method that I described. Have you used that method?

Hi Rick, I tried to create new profiles with my safed exported file - unfortunately it didn´t work. When I unzipped the Zip file a lot of files have been corrupted. Therefor I thing this is the problem (the exportation did not work correctly). Thank you for your assistance - but here it is very late and I have to go now. Have a nice day Ralf

I cannot help if you do not take my suggestions.

Please go to "Help" (menu) > Troubleshooting information

Look down the left column of the first table until you see "Profiles". Click on "about:profiles" next to it.

The next screen will show you information about all your profiles. Identify the one that is in use. For each of the others, click on "Launch profile" and see if your data is there.

Good morning Rick. I was there and I followed your suggestion. The profiles I can open but this is not the profile I am looking for. I tried to open the safed profile I exported (on an external drive) but also this doesn´t work. Principally I understood your suggestion and it was very helpful in the sense of knowing now where I may check the profile(s). But they are not workable or the secured data are corrupted - the worst scenario. Thank you very much and have a good day Ralf

Good morning, Ralf.

OK.

How did you export the profile?

How do you try to import it?

Exactly what happens when you try to import it? Can you post a screenshot?

Exactly what happens when you unzip the exported profile? Can you post a screenshot?

Hi Rick. I exported with the export function of Thunderbird. I secured the data on an external drive. After that I tried to import them back - but it did not work. I found an Zip-file that was related to the Thunderbird data. Tying to import this by using the import function of Thunderbird I got the information that this is not possible because the ZIP-file is to big and I shall unzip the file first. I tried to unzip the file with winrar but I got the information that the files are corrupted. So I have no further idea what to do. Maybe on Monday I will call someone who is more specialized in data restoring than I am. Maybe he can help me to restore the Zip-file and maybe after that I may create a new profile with this data - if this idea works. So have a nice weekend and best regards from Germany Ralf

First thing that I would do is preserve that zipped file, if you have not already, and always work from a copy of it.

I do not use Windows (though I have used it plenty in the past). But I read that Windows has built-in support for zipped files, so Winrar should be unnecessary and may be introducing problems. Can you not decompress the zipped file by just double-clicking on it?