How can I reinstall thunderbird instead of installing it.
My Thunderbird program became corrupted. The individual files still show, but the menu bars at the top have disappeared. I do not know how to restore the program as it was. I'd like to not "install" the program again for fear of losing data.
My Thunderbird program became corrupted. The individual files still show, but the menu bars at the top have disappeared. I do not know how to restore the program as it was. I'd like to not "install" the program again for fear of losing data.
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Uninstall and then re-install Lightning via the add-on manager. No data will be lost.
What is Lightning
The Calendar add-on. A recent version has caused many bad side effects. Updating, or removing it may help you.
Tools|Add-ons|Extensions