tunderbird not downloading offline folders

Imap account check settings: You need to subscribe to see folders. If you have subfolders then you also need to subscribe to see them. * Right click on imap mail account and select 'Subscribe' A window opens with list. Are all your folders listed? * Click on 'Refresh' button. * Make sure everything is selected. * click on OK Now check account: * Right click on imap mail account and select 'Settings' * Select 'Server Settings' * Select : 'Check for new mesages at startup' * Select: 'check for messages every eg: 15 minutes' * Select 'Allow immediate server notification when new messages arrive' When I delete a message * Select 'Move it to this folder' and choose 'Deleted Items on imap mail account' * click on 'Advanced' button * Select: 'Show only subscribed folders' '''Note:''' if you are not seeing all your folders in the 'Subscribe' list then try unchecking this option. * Select 'Server supports folders that contain subfolders and messages' * click on 'OK * select 'cleanup (Expunge) Inbox on Exit' Left pane * select 'Synchronise & Storage' * select 'Keep messages for this account on this computer' * click on 'Advanced' button * Make sure all folders and subfolders are listed and checked. * click on 'OK' Under Disc Space' * Select: 'synchronise all messages locally regardless of age' clickon 'OK to close Account Settings Check Offline options: * Menu icon 3 bars icon > Options > Advanced > 'Network & Disc Space' tab * click on 'Offline' button * Select: 'Automatically follow detected online state Send unsent messages when going offline * Select 'Ask me' Download messages for offline use when going offline * select 'Yes' * click on OK * Click on 'OK' to save Options. Make sure you have this setting: 'Menu icon > Folders > 'All' Restart Thundrebird Once it is fully running.... Menu icon > File > Offline > Work Offline It should auto synchronise folders before going into offline mode.