# 2fa in combination with Card- & CalDav-Sync

**URL:** <https://help.nextcloud.com/t/2fa-in-combination-with-card-caldav-sync/3467>\
**Category:** ℹ️ Support\
**Created:** [September 22, 2016, 3:24am UTC](https://help.nextcloud.com/t/2fa-in-combination-with-card-caldav-sync/3467 "2016-09-22T03:24:19Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![anon99252149](https://help.nextcloud.com/letter_avatar/anon99252149/32/5_5575768a8748004e209b776fc1b2916d.png) [@anon99252149](https://help.nextcloud.com/u/anon99252149)\
**Post date:** [September 22, 2016, 8:30am UTC](https://help.nextcloud.com/t/2fa-in-combination-with-card-caldav-sync/3467/2 "2016-09-22T08:30:19Z")

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RTFM 😉

You have to create device passwords.

[https://docs.nextcloud.com/server/10/user\_manual/session\_management.html#managing-devices](https://docs.nextcloud.com/server/10/user_manual/session_management.html#managing-devices)

_If two-factor authentication is enabled for your account, device-specific passwords are the only way to configure clients. The client will deny connections of clients using your login password then._

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_[View the full topic](https://help.nextcloud.com/t/2fa-in-combination-with-card-caldav-sync/3467)._