Hello michael bate We have read your message.

We try to help you.

Greetings Firefox Volunteer.

Hello there again. Michael bates.

http://kb.mozillazine.org/Moving_your_profile_folder_-_Thunderbird#Use_the_Profile_Manager_to_move_your_profile

http://kb.mozillazine.org/Minimize_the_size_of_a_profile

How is the space of your hard disk at the time?is this still happening?Is there more to explain about this?can I try to help you with it?

https://en.wikipedia.org/wiki/Solid-state_drive

Greetings Firefox Volunteer

THANK YOU for your prompt reply.

My D drive has 47 GB free space - a large percentage of the full 2 TB. The C drive has 14 MB free and will not allow installation of new programs or updates of Thunderbird. Attempting to update yields a message asking if I have another copy of Thunderbird running.

The profile appears to be on the D drive (D:\TbirdProfiles\ - contains 173 files with 7 GB). I tried bringing up profile manager but don't see any way to use it to move messages anywhere.

Thanks again, Michael Bate

Hi Michael There is an easy way to check whether your actual profile with all the current emails is actually on C: or on D: Hamburger menu - Help - Troubleshooting information Look for Profile Folder - click Open Folder. That will show you where your current active folder is storing all those emails. If it is already on D: you don't need to move anything, but look for another culprit using up all your C: space. After that, if the profile is in C:, there are guides for moving your profile. https://support.mozilla.org/en-US/kb/profiles-where-thunderbird-stores-user-data http://kb.mozillazine.org/Moving_your_profile_folder_-_Thunderbird Agnes