NC 15 2FA MacOs

so how can i use iCalendar in mac os if i enable 2FA or it impossible?

You can set up 2FA. For specific applications (calendar application, NC clients on desktop/mobile, …) you create app passwords. These are specific credentials for this specific application, they have a auto-generated complex password and you can invalidate specifically these accounts in case of device loss etc.

i try do it, but fail i have error login or password wrong

Check out that the link you use is correct:

and for mac you probably should set up the service discovery with the .well-known redirections:

It might be worth checking you access.log from the webserver in parallel, there you see which URL was requested and if it was successful or some permission issues (code 4xx).

[04/Feb/2019:22:52:56 +0500] “REPORT /remote.php/dav/calendars/orlov/c7129bed-1d58-40a2-a0db-65bc3d8bd993/ HTTP/2.0” 207 22585 “-” "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14)

i have sync only one way, from NC to mac

oops sorry some time and all sinc

“PROPFIND /remote.php/dav/principals/users/orlov/ HTTP/1.1” 401 195 “-” “Mac+OS+X/10.14.1 (18B75) CalendarAgent/416”

If often have first an un-authenticated request with 401 error followed by an authenticated, like this:

ip - - [06/Feb/2019:11:58:07 +0000] "PROPFIND /owncloud/remote.php/dav/principals/users/username/ HTTP/1.1" 401 1891 "-" "iOS/12.1.2 (16C101) dataaccessd/1.0"
ip - username [06/Feb/2019:11:58:07 +0000] "PROPFIND /owncloud/remote.php/dav/principals/users/username/ HTTP/1.1" 207 3563 "-" "iOS/12.1.2 (16C101) dataaccessd/1.0"