Can not connect to yandex caldav

  • I get an error by connecting to caldav/cardav server (😞
    "Missing Capabilities: Invalid DAV Response
    Neither CALDAV nor CARDDAV available"

    I have no connection issues with AndroidCaldavSyncAdapater and CalDAV-Sync(

    What I'm doing wrong? I need some help 🙂

    Thanks in advance

  • here is a catlog:

    03-04 16:13:23.499 I/davdroid.QueryServerDialogFragment(29510): onCreateLoader
    03-04 16:13:23.499 I/davdroid.WebDavResource(29510): Using preemptive authentication (not compatible with Digest auth)
    03-04 16:13:23.839 D/davdroid.SNISocketFactory(29510): Setting SNI hostname
    03-04 16:13:24.150 I/davdroid.SNISocketFactory(29510): Established TLSv1 connection with using SSL_RSA_WITH_RC4_128_SHA
    03-04 16:13:24.350 D/davdroid.WebDavResource(29510): Received HTTP/1.1 200 OK

  • i can provide with a testing yandex account, if somebody could debug it

  • developer

    I have created a test account, but it doesn't work in any clients. Can you please send the test account to

  • Thanks for reply! I'll send you an email with test account

    I did right now a test connection with CaldavSyncAdapater.
    It was possible to sync the caldav calendar with this settings:
    server url:

    I'll send you an email with login data for a test account

    Thanks in advance!

  • developer

    $ curl -vX OPTIONS -u $username:$password
    * Rebuilt URL to:
    * Adding handle: conn: 0x1faadc0
    * Adding handle: send: 0
    * Adding handle: recv: 0
    * Curl_addHandleToPipeline: length: 1
    * - Conn 0 (0x1faadc0) send_pipe: 1, recv_pipe: 0
    * About to connect() to port 443 (#0)
    *   Trying
    * Connected to ( port 443 (#0)
    * Initializing NSS with certpath: sql:/etc/pki/nssdb
    *   CAfile: /etc/pki/tls/certs/ca-bundle.crt
      CApath: none
    * SSL connection using SSL_RSA_WITH_RC4_128_SHA
    * Server certificate:
    * 	subject:,,ST=Russian Federation,L=Moscow,OU=ITO,O=Yandex LLC,C=RU
    * 	start date: Nov 28 14:26:26 2013 GMT
    * 	expire date: Nov 27 14:26:26 2016 GMT
    * 	common name:
    * 	issuer: CN=Certum Level IV CA,OU=Certum Certification Authority,O=Unizeto Technologies S.A.,C=PL
    * Server auth using Basic with user ''
    > OPTIONS / HTTP/1.1
    > Authorization: Basic XXXXXXXXXXXXXXXXXXXXXXX
    > User-Agent: curl/7.32.0
    > Host:
    > Accept: */*
    < HTTP/1.1 200 OK
    * Server nginx is not blacklisted
    < Server: nginx
    < Date: Sat, 15 Mar 2014 11:52:02 GMT
    < Content-Length: 0
    < Connection: keep-alive
    < X-Request-Id: MX4MpOz1_01g
    < DAV: 1,addressbook,calendar-access,calendar-auto-schedule,calendar-availability,calendar-schedule,calendar-proxy,calendarserver-private-comments,calendarserver-principal-property-search
    < MS-Author-Via: DAV
    * Connection #0 to host left intact

    As you can see, there's no Allow: REPORT although this is required for CalDAV/CardDAV synchronization.

    This issue is similar to

    I have sent a bug report via the Yandex contact form.

  • developer

    From Yandex support:

    The method REPORT has been added to the list of supported.

    However, it doesn't seem to be fixed in the public version yet.

  • developer

    It seems like have committed their fix; it's now working without any changes in DAVdroid.

    We will add Yandex to the Configuration page soon.

  • Please update the Configuration page - there is now "Phone contacts" group in Contacts of Yandex Webmail which is syncing over CardDAV.

  • developer

    @ar-lex Thank you, I can confirm that is now working together with DAVdroid 0.6.1. We will add it to the Configuration page.


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