In search type: %Appdata%
   select the %Appdata% file folder
   Select 'Roaming' folder
   Select 'Thunderbird' folder
   Select 'Profiles' folder
   Select name of profile folder
   Select 'Mail' folder
   Select 'Local Folders' folder 

Good day, I have received your reply to my problem of missing files in my local folders after upgrading to T-Bird 143.0.1 Your reply is a “No reply” message so I have to start all over again with this new message to go forward. Here is what your reply said: re: I noticed that a large part of one of my local folders is missing. I presume by local folders you are talking about the 'Local Folders' special account. So, if different you need to clarify. YOUR REPLY: Please post/upload an image of the 'Folder Pane' which shows everything in 'Local Folders' account. Then post/upload images that show what is in the profile folder: Assuming you are using Windows OS In search type: %Appdata% select the %Appdata% file folder Select 'Roaming' folder Select 'Thunderbird' folder Select 'Profiles' folder Select name of profile folder Select 'Mail' folder Select 'Local Folders' folder Make sure the view is showing all contents in column details format, extensions and hidden files must be allowed. Make window large enough to show all contents - or if necessary, post more than one image. This means I can compare profile with Folder Pane and check to see if appropriate files are missing. What Anti-Virus do you use? Is it allowed to scan your Thunderbird profile folders? Do you use any Anti-Virus or other cleanup program like CCleaner or Wisecleaner that cleans up temp files etc? If yes, then what do you use? MY REPLY First, your instructions do not work because following your path, I go down each line until I reach (Select Profiles folder) Once opened it gives me the names of my 2 alpha numerical profiles and I opened each profile there is no such thing as "Local Profile" folder. The View shows all files, My AV is Bitdefender; I have no clean up software My system is w10 pro x64 I have been using T-Bird for years and installed dozens of updates always using my same system and tools so something seems to be wrong with the update itself. I will wait for your reply Thank you for your support Best Regards Douglas Noades