An If-None-Match header was specified, but the ETag matched (or * was specified)

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1

Server

  • NC 11.0.1
  • Ubuntu 16.04.1 LTS
  • Calendar 1.5.0
  • Contacts 1.5.2

Client

  • Ubuntu 16.04.1 LTS
  • Thunderbird 45.7.0
  • AddOn Lightening 4.7.4
  • AddOn Inverse SOGo Connector 31.0.3

Issue: Logging every ~ 3 minutes

  • Debug webdav Sabre\DAV\Exception\PreconditionFailed: HTTP/1.1 412 An If-None-Match header was specified, but the ETag matched (or * was specified).

    /var/www/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php - line 474: Sabre\DAV\Server->checkPreconditions(Object(Sabre\HTTP\Request), Object(Sabre\HTTP\Response))
    /var/www/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php - line 254: Sabre\DAV\Server->invokeMethod(Object(Sabre\HTTP\Request), Object(Sabre\HTTP\Response))
    /var/www/nextcloud/apps/dav/lib/Server.php - line 227: Sabre\DAV\Server->exec()
    /var/www/nextcloud/apps/dav/appinfo/v2/remote.php - line 30: OCA\DAV\Server->exec()
    /var/www/nextcloud/remote.php - line 165: require_once(’/var/www/nextcl…’)
    {main}

    2017-01-31T10:38:49+0100

  • Info admin_audit Login successful: “UserXYZ” 2017-01-31T10:38:49+0100

  • Info admin_audit Login attempt: “UserXYZ” 2017-01-31T10:38:47+0100

Issue stopped by

  • Closing Thunderbird