Welcome to the mailbox.org user forum!
CardDAV/CalDAV authentication error
Proposed
Hello since about 24 hours or so ago, I have been consistently receiving error authenticating into mailbox.orgs CardDAV or CalDAV. This is quite frustrating. It is happening both on my Android DAVx5 client and on Thunderbird. The support pages as of this post are also giving me 404. What is going on with mailbox? There was no email or any communication about this. Quite frustrating because I love your service.
Files:
Screenshot 2025...
I like this idea 
Access denied
No connection
Real-time notifications may not work
I have been having the same error and since about the same time. I finally solved it by disabling the 2FA by TOTP on mailbox web client. Then I re-logged in with DAVx5 and it worked. Its really wierd because I've had 2FA enabled since 2 weeks and it never caused problems up until two days ago.
It would be very necessary to be able to have 2FA enabled and have DAV syncing working.
I have been having the same error and since about the same time. I finally solved it by disabling the 2FA by TOTP on mailbox web client. Then I re-logged in with DAVx5 and it worked. Its really wierd because I've had 2FA enabled since 2 weeks and it never caused problems up until two days ago.
It would be very necessary to be able to have 2FA enabled and have DAV syncing working.
Have you created/used an application password for CalDAV/CardDAV?
Have you created/used an application password for CalDAV/CardDAV?
I'm not getting errors on DAVx5, but Thunderbird desktop is continually asking me to enter my dav.mailbox.org credentials on each startup, in spite of saving the password. My app password works for this prompt, until I close the program or restart, and then I'm required to manually enter those credentials all over again. Currently chatting with support and they suggested changing the URL to dav-sso-mailbox.org. However, I don't see anywhere to change this URL within Thunderbird's settings, and I suspect (but have not confirmed) that Mailbox.org needs to change things on their side so that Thunderbird automatically prompts users for dav-sso-mailbox.org sign in credentials instead of dav.mailbox.org.
Is anyone else getting similar repeated prompts to enter their DAV credentials in Thunderbird?
I'm not getting errors on DAVx5, but Thunderbird desktop is continually asking me to enter my dav.mailbox.org credentials on each startup, in spite of saving the password. My app password works for this prompt, until I close the program or restart, and then I'm required to manually enter those credentials all over again. Currently chatting with support and they suggested changing the URL to dav-sso-mailbox.org. However, I don't see anywhere to change this URL within Thunderbird's settings, and I suspect (but have not confirmed) that Mailbox.org needs to change things on their side so that Thunderbird automatically prompts users for dav-sso-mailbox.org sign in credentials instead of dav.mailbox.org.
Is anyone else getting similar repeated prompts to enter their DAV credentials in Thunderbird?
Problem solved.
@zapata that was indeed the problem. I knew we had app passwords for emails, but I didn't realize we also had app passwords for cardav/caldav. The interface is a bit confusing in mailbox because these two passwords are not in the same place.
For anyone wondering the Email passwords are in : Settings -> mailbox.org -> Email app passwords, while the Application passwords (used for carddav/caldav) are in : Settings -> Security -> Application passwords
@Maximus. I am suspecting you are going through similar problem. To get Thunderbird to work correctly, I had to do this:
1. For Calendar : Go to your calendar and then "Properties" and make sure you have your new Username set here.
2. For Address Book : There was no way to change the username, so I had to "Remove" all dav.mailbox.org address books, and add them again. And this time I entered the new username.
Problem solved.
@zapata that was indeed the problem. I knew we had app passwords for emails, but I didn't realize we also had app passwords for cardav/caldav. The interface is a bit confusing in mailbox because these two passwords are not in the same place.
For anyone wondering the Email passwords are in : Settings -> mailbox.org -> Email app passwords, while the Application passwords (used for carddav/caldav) are in : Settings -> Security -> Application passwords
@Maximus. I am suspecting you are going through similar problem. To get Thunderbird to work correctly, I had to do this:
1. For Calendar : Go to your calendar and then "Properties" and make sure you have your new Username set here.
2. For Address Book : There was no way to change the username, so I had to "Remove" all dav.mailbox.org address books, and add them again. And this time I entered the new username.
Also, if someone can change this from an "idea" to a "problem" that would be nice. Sorry I am new to this forum and can't seem to find a way to do that. Thank you again. Love mailbox.org <3
Also, if someone can change this from an "idea" to a "problem" that would be nice. Sorry I am new to this forum and can't seem to find a way to do that. Thank you again. Love mailbox.org <3
Thanks for all suggestions, using them I managed to solve my problems as well.
Thanks for all suggestions, using them I managed to solve my problems as well.
> The interface is a bit confusing in mailbox because these two passwords are not in the same place.
Absolutely horrible interface. I also spent several hours scratching my head trying to figure out why the app passwords don't work while trying all sorts of things...
> The interface is a bit confusing in mailbox because these two passwords are not in the same place.
Absolutely horrible interface. I also spent several hours scratching my head trying to figure out why the app passwords don't work while trying all sorts of things...
Replies have been locked on this page!