Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

Rechercher dans l’assistance

Évitez les escroqueries à l’assistance. Nous ne vous demanderons jamais d’appeler ou d’envoyer un SMS à un numéro de téléphone ou de partager des informations personnelles. Veuillez signaler toute activité suspecte en utilisant l’option « Signaler un abus ».

Learn More

I have a problem with Mozila Thunderbird

more options

Since today, we experience an unusual problem in Mozila Thunderbird. The program ask for the password for the email that is already sign in. And if we enter the password, it ask for the password again. The error is "login to server outlook.office365.com with username failed". Our company need to solve this problem because we use Mozila Thunderbird for over 100 employee.

Thank you!

Since today, we experience an unusual problem in Mozila Thunderbird. The program ask for the password for the email that is already sign in. And if we enter the password, it ask for the password again. The error is "login to server outlook.office365.com with username failed". Our company need to solve this problem because we use Mozila Thunderbird for over 100 employee. Thank you!

Toutes les réponses (1)

more options

Hello victor Tudor. We have read your message. We try to help you.



Can you go in the software from Thunderbird? It seems that this message keeps coming back.. Oké you can go into Thunderbird ,you can use your stuff with this program.

This message is still coming up and you want it to be removed. Off course there is no further unlikely situations it is there and doing nothing further then keeps on coming on the screen.

Is this issue when you are going to send a mail?

We can try to use the following

In Thunderbird, click Tools, Account Settings, and in left pane, click "Outgoing Server" Click Edit. Under "Security and Authentication" DESELECT "Use name and password" Click OK and again OK.

Does this changes it in this behavior ?


Greetings Firefox volunteer.

Modifié le par Googlethunderbird