How To Fix Thunderbird Authentication Failure?

If you are getting a thunderbird authentication failure message while using a thunderbird email client. Proceed with the easy steps below to solve it.

Step 1:

If you have changed the password, the old password that is saved in the Mozilla Thunderbird email client needs to be removed.

Step 2:

Go to the main interface of the Mozilla Thunderbird email client, navigate to the Preferences window, and click the Security option at the top of the screen.

Step 3:

Select the Saved Passwords option.

Step 4:

This will remove the previously saved passwords in the Mozilla Thunderbird email client.

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