Mozilla Thunderbird is a mail client that has the same code base as Mozilla Firefox. As a result, it can face the same profile locks like Firefox that can obstruct your access to the service. When you face this error, you get a message that indicates that Thunderbird is running, but not responding. If you want to open a new window, you must close the existing one. You can also restart your system." You can deactivate the profile lock by erasing all Mozilla processes from your Windows taskbar.
Thunderbird can reconstruct the folder index and displays the message list faster when the folder is full and also reflects the exact messages you have in the folder.
How will you Repair Folders in Mozilla Thunderbird?
If you have to rebuild a Mozilla Thunderbird folder in which emails have been lost or erased messages are still present:
• Switch off the provision of automatic mail checking for safety. It might not be required but it is important to prevent any potential cause for conflicts.
• Click on the folder you want to repair in Mozilla Thunderbird.
• Then Select Properties from the menu.
• Go to the General Information tab.
• Click Repair Folder.
• Click OK.
You don't have to wait till the end of the process of rebuilding. However, you must also see that anything else is going on in Thunderbird till the rebuilding process is complete.
If the above solutions do not come in use and fail to repair your folders in Mozilla Thunderbird, you can take help from Thunderbird Mail Customer Service. Their customer service will solve all your queries and assist whenever required.
