Helle there We have read the question We try to help you.

The option to refresh or to repair this issue on this section of problems is to right click on the folder select properties and then the repair button.

The other way is to select in the program the Popstate.dat file. To erase them file popstate.dat file it becomes that the inbox server download s anything. First you must have a empty inbox and also compact it.

Make hidden folders visible. http://kb.mozillazine.org/Show_hidden_files_and_folders

Oke after that go to help in the thunderbird menu the go to trouble shooting information. Click on show folder. The folder that came op is the profile folder .

Try to close Thunderbird now . Try to click on the mail folder,oké. click on mail account name folder look for and delete ; popstate.dat file look for and delete: Inbox.msf file

Try to close windows by pressing the X. Restart Thunderbird slowly .

Both index files popstate.dat and inbox.msf had or had been created to new ones now on that pc.

Starting up Thunderbird is oke and the inbox server will start to dowload s all that mail and stuff . After that you can arrange that files and mail into other maps or sub maps.

Greetings Firefox volunteer.

I am locking this duplicate topic. Please follow up in https://support.mozilla.org/en-US/questions/1503904/

I am locking this duplicate topic. Please follow up in https://support.mozilla.org/en-US/questions/1503904/