Update forced despite 'updatechecker' set to false in config.php

Steps to reproduce

  1. Set 'updatechecker' to false in config.php
  2. Wait for a new version to be released

Expected behaviour

Server should not check for updates.

Actual behaviour

Server checks for updates, and if one is found users are unable to login or use the site in any way until the update is performed. See https://i.imgur.com/Mmn1EL3.png for the screen that replaced the usual interface.

Server configuration

Operating system: Debian Linux 7

Web server: nginx

Database: MySQL

PHP version: 5.6.32-1~dotdeb+7.1

ownCloud version: 10.0.3.3 (now upgraded to 10.0.4.4)

Updated from an older ownCloud or fresh install: Updated

Where did you install ownCloud from: owncloud.org

Signing status (ownCloud 9.0 and above):

No errors have been found.

The content of config/config.php:

{
    "system": {
        "updatechecker": false,
        "instanceid": "oc218al1muy8",
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "trusted_domains": [
            "***REMOVED SENSITIVE VALUE***",
            "***REMOVED SENSITIVE VALUE***",
            "***REMOVED SENSITIVE VALUE***"
        ],
        "datadirectory": "\/var\/www\/owncloud\/data",
        "overwrite.cli.url": "***REMOVED SENSITIVE VALUE***",
        "dbtype": "mysql",
        "version": "10.0.4.4",
        "dbname": "owncloud",
        "dbhost": "127.0.0.1",
        "dbtableprefix": "oc_",
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "logtimezone": "UTC",
        "installed": true,
        "maintenance": false,
        "theme": "tfg",
        "loglevel": 2,
        "mail_smtpmode": "smtp",
        "mail_smtpauthtype": "LOGIN",
        "mail_from_address": "***REMOVED SENSITIVE VALUE***",
        "mail_smtphost": "smtp.gmail.com",
        "mail_domain": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpsecure": "ssl",
        "mail_smtpauth": 1,
        "mail_smtpport": "465",
        "mail_smtpname": "***REMOVED SENSITIVE VALUE***",
        "mail_smtppassword": "***REMOVED SENSITIVE VALUE***"
    }
}

List of activated apps:

Enabled:
  - activity: 2.3.6
  - comments: 0.3.0
  - configreport: 0.1.1
  - dav: 0.3.2
  - federatedfilesharing: 0.3.1
  - federation: 0.1.0
  - files: 1.5.1
  - files_external: 0.7.1
  - files_pdfviewer: 0.8.2
  - files_sharing: 0.10.1
  - files_texteditor: 2.2.1
  - files_trashbin: 0.9.1
  - files_versions: 1.3.0
  - files_videoplayer: 0.9.8
  - firstrunwizard: 1.1
  - gallery: 16.0.2
  - market: 0.2.3
  - notifications: 0.3.2
  - provisioning_api: 0.5.0
  - systemtags: 0.3.0
  - templateeditor: 0.1
  - updatenotification: 0.2.1
Disabled:
  - encryption
  - external
  - theme-example
  - user_external

Are you using external storage, if yes which one: No

Are you using encryption: No

Are you using an external user-backend, if yes which one: No

Client configuration

Browser: Chrome/any

Operating system: Windows/any

Logs

Web server error log

ownCloud log (data/owncloud.log)

{"reqId":"txg5LCb1LoXTxJ1kTPMC","level":3,"time":"2017-12-07T00:19:34+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"PHP","method":"GET","url":"\/s\/Albo7Aa33aWL3YP?path=%2FPrice%20Lists","message":"Undefined index: server2serversharing at \/var\/www\/owncloud\/themes\/***REMOVED SENSITIVE VALUE***\/apps\/files_sharing\/templates\/public.php#78"}
{"reqId":"6esatYU9LKHdrpDeBnqW","level":3,"time":"2017-12-07T00:20:21+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"PHP","method":"GET","url":"\/login","message":"include(layout.noscript.warning.php): failed to open stream: No such file or directory at \/var\/www\/owncloud\/themes\/***REMOVED SENSITIVE VALUE***\/core\/templates\/layout.guest.php#28"}
{"reqId":"6esatYU9LKHdrpDeBnqW","level":3,"time":"2017-12-07T00:20:21+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"PHP","method":"GET","url":"\/login","message":"include(): Failed opening 'layout.noscript.warning.php' for inclusion (include_path='\/var\/www\/owncloud\/apps') at \/var\/www\/owncloud\/themes\/***REMOVED SENSITIVE VALUE***\/core\/templates\/layout.guest.php#28"}
{"reqId":"E2PcwIUIvE7oYvI7XKai","level":2,"time":"2017-12-07T02:15:43+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"core","method":"GET","url":"\/a2billing\/common\/javascript\/misc.js","message":"Trusted domain error. \"***REMOVED SENSITIVE VALUE***\" tried to access using \"***REMOVED SENSITIVE VALUE***\" as host."}
{"reqId":"E2PcwIUIvE7oYvI7XKai","level":3,"time":"2017-12-07T02:15:43+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"PHP","method":"GET","url":"\/a2billing\/common\/javascript\/misc.js","message":"include(layout.noscript.warning.php): failed to open stream: No such file or directory at \/var\/www\/owncloud\/themes\/***REMOVED SENSITIVE VALUE***\/core\/templates\/layout.guest.php#28"}
{"reqId":"E2PcwIUIvE7oYvI7XKai","level":3,"time":"2017-12-07T02:15:43+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"PHP","method":"GET","url":"\/a2billing\/common\/javascript\/misc.js","message":"include(): Failed opening 'layout.noscript.warning.php' for inclusion (include_path='\/var\/www\/owncloud\/apps') at \/var\/www\/owncloud\/themes\/***REMOVED SENSITIVE VALUE***\/core\/templates\/layout.guest.php#28"}
{"reqId":"O6hNLRuuoAiTKSTKtA0Y","level":3,"time":"2017-12-07T04:01:56+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"PHP","method":"GET","url":"\/s\/Albo7Aa33aWL3YP","message":"Undefined index: server2serversharing at \/var\/www\/owncloud\/themes\/***REMOVED SENSITIVE VALUE***\/apps\/files_sharing\/templates\/public.php#78"}
{"reqId":"SaB54FTOjJmTJd6V45wa","level":3,"time":"2017-12-07T04:02:14+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"PHP","method":"GET","url":"\/login","message":"include(layout.noscript.warning.php): failed to open stream: No such file or directory at \/var\/www\/owncloud\/themes\/***REMOVED SENSITIVE VALUE***\/core\/templates\/layout.guest.php#28"}
{"reqId":"SaB54FTOjJmTJd6V45wa","level":3,"time":"2017-12-07T04:02:14+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"PHP","method":"GET","url":"\/login","message":"include(): Failed opening 'layout.noscript.warning.php' for inclusion (include_path='\/var\/www\/owncloud\/apps') at \/var\/www\/owncloud\/themes\/***REMOVED SENSITIVE VALUE***\/core\/templates\/layout.guest.php#28"}
{"reqId":"pzVvu2kQka7iaZs3xu89","level":3,"time":"2017-12-07T04:10:16+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"PHP","method":"GET","url":"\/s\/Albo7Aa33aWL3YP","message":"Undefined index: server2serversharing at \/var\/www\/owncloud\/themes\/***REMOVED SENSITIVE VALUE***\/apps\/files_sharing\/templates\/public.php#78"}
{"reqId":"DrAg05y2PgP73rGpPBBO","level":3,"time":"2017-12-07T04:10:46+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"PHP","method":"GET","url":"\/login","message":"include(layout.noscript.warning.php): failed to open stream: No such file or directory at \/var\/www\/owncloud\/themes\/***REMOVED SENSITIVE VALUE***\/core\/templates\/layout.guest.php#28"}
{"reqId":"DrAg05y2PgP73rGpPBBO","level":3,"time":"2017-12-07T04:10:46+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"PHP","method":"GET","url":"\/login","message":"include(): Failed opening 'layout.noscript.warning.php' for inclusion (include_path='\/var\/www\/owncloud\/apps') at \/var\/www\/owncloud\/themes\/***REMOVED SENSITIVE VALUE***\/core\/templates\/layout.guest.php#28"}
{"reqId":"rJR0ARkndlyrq3HdAlZE","level":3,"time":"2017-12-07T04:13:27+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"PHP","method":"GET","url":"\/s\/Albo7Aa33aWL3YP","message":"Undefined index: server2serversharing at \/var\/www\/owncloud\/themes\/***REMOVED SENSITIVE VALUE***\/apps\/files_sharing\/templates\/public.php#78"}
{"reqId":"efNI4x5OvMtQfN5qdFY4","level":3,"time":"2017-12-07T04:13:42+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"PHP","method":"GET","url":"\/login","message":"include(layout.noscript.warning.php): failed to open stream: No such file or directory at \/var\/www\/owncloud\/themes\/***REMOVED SENSITIVE VALUE***\/core\/templates\/layout.guest.php#28"}
{"reqId":"efNI4x5OvMtQfN5qdFY4","level":3,"time":"2017-12-07T04:13:42+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"PHP","method":"GET","url":"\/login","message":"include(): Failed opening 'layout.noscript.warning.php' for inclusion (include_path='\/var\/www\/owncloud\/apps') at \/var\/www\/owncloud\/themes\/***REMOVED SENSITIVE VALUE***\/core\/templates\/layout.guest.php#28"}
{"reqId":"jsTZAJNlMMRg0vwHIGIU","level":3,"time":"2017-12-07T04:24:36+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"PHP","method":"GET","url":"\/login","message":"include(layout.noscript.warning.php): failed to open stream: No such file or directory at \/var\/www\/owncloud\/themes\/***REMOVED SENSITIVE VALUE***\/core\/templates\/layout.guest.php#28"}
{"reqId":"jsTZAJNlMMRg0vwHIGIU","level":3,"time":"2017-12-07T04:24:36+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"PHP","method":"GET","url":"\/login","message":"include(): Failed opening 'layout.noscript.warning.php' for inclusion (include_path='\/var\/www\/owncloud\/apps') at \/var\/www\/owncloud\/themes\/***REMOVED SENSITIVE VALUE***\/core\/templates\/layout.guest.php#28"}
{"reqId":"Aooo16SnVGSKD4cSBque","level":2,"time":"2017-12-07T06:18:28+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"core","method":"GET","url":"\/","message":"Trusted domain error. \"***REMOVED SENSITIVE VALUE***\" tried to access using \"ww.***REMOVED SENSITIVE VALUE***\" as host."}
{"reqId":"Aooo16SnVGSKD4cSBque","level":3,"time":"2017-12-07T06:18:28+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"PHP","method":"GET","url":"\/","message":"include(layout.noscript.warning.php): failed to open stream: No such file or directory at \/var\/www\/owncloud\/themes\/***REMOVED SENSITIVE VALUE***\/core\/templates\/layout.guest.php#28"}
{"reqId":"Aooo16SnVGSKD4cSBque","level":3,"time":"2017-12-07T06:18:28+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"PHP","method":"GET","url":"\/","message":"include(): Failed opening 'layout.noscript.warning.php' for inclusion (include_path='\/var\/www\/owncloud\/apps') at \/var\/www\/owncloud\/themes\/***REMOVED SENSITIVE VALUE***\/core\/templates\/layout.guest.php#28"}
{"reqId":"ufwBLxhudfwb42YF0Bov","level":3,"time":"2017-12-07T06:43:49+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"PHP","method":"GET","url":"\/","message":"include(layout.noscript.warning.php): failed to open stream: No such file or directory at \/var\/www\/owncloud\/themes\/***REMOVED SENSITIVE VALUE***\/core\/templates\/layout.guest.php#28"}
{"reqId":"ufwBLxhudfwb42YF0Bov","level":3,"time":"2017-12-07T06:43:49+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"PHP","method":"GET","url":"\/","message":"include(): Failed opening 'layout.noscript.warning.php' for inclusion (include_path='\/var\/www\/owncloud\/apps') at \/var\/www\/owncloud\/themes\/***REMOVED SENSITIVE VALUE***\/core\/templates\/layout.guest.php#28"}
{"reqId":"BqlsND6IgJjx9GEpZkvK","level":2,"time":"2017-12-07T09:15:28+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"core","method":"GET","url":"\/","message":"Trusted domain error. \"***REMOVED SENSITIVE VALUE***\" tried to access using \"***REMOVED SENSITIVE VALUE***.***REMOVED SENSITIVE VALUE***\" as host."}
{"reqId":"YE7BbuWGlNOe0aFocxKb","level":2,"time":"2017-12-07T09:21:42+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"core","method":"GET","url":"\/","message":"Trusted domain error. \"***REMOVED SENSITIVE VALUE***\" tried to access using \"www.ww.***REMOVED SENSITIVE VALUE***\" as host."}
{"reqId":"PGkMkA4Jaf5VkMnfpX1V","level":2,"time":"2017-12-07T10:18:22+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"core","method":"GET","url":"\/","message":"Trusted domain error. \"***REMOVED SENSITIVE VALUE***\" tried to access using \"***REMOVED SENSITIVE VALUE***.***REMOVED SENSITIVE VALUE***\" as host."}
{"reqId":"5aP65gVtWzErvOsJiBH0","level":2,"time":"2017-12-07T12:21:24+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"core","method":"GET","url":"\/","message":"Trusted domain error. \"***REMOVED SENSITIVE VALUE***\" tried to access using \"***REMOVED SENSITIVE VALUE***\" as host."}
{"reqId":"8MQwxzxQRGs9NLyNMpOY","level":2,"time":"2017-12-07T13:47:00+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"core","method":"HEAD","url":"\/robots.txt","message":"Trusted domain error. \"***REMOVED SENSITIVE VALUE***\" tried to access using \"***REMOVED SENSITIVE VALUE***\" as host."}
{"reqId":"KTw3ohBWKiyCNlPbPTiX","level":2,"time":"2017-12-07T17:23:10+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"core","method":"GET","url":"\/","message":"Trusted domain error. \"***REMOVED SENSITIVE VALUE***\" tried to access using \"***REMOVED SENSITIVE VALUE***:443\" as host."}
{"reqId":"Ji6MtF89WIs0BU5Jm5QY","level":2,"time":"2017-12-07T17:27:25+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"core","method":"HEAD","url":"\/","message":"Trusted domain error. \"***REMOVED SENSITIVE VALUE***\" tried to access using \"***REMOVED SENSITIVE VALUE***.***REMOVED SENSITIVE VALUE***\" as host."}
{"reqId":"aa60YcPYSu5zpCBLjcS3","level":3,"time":"2017-12-07T18:25:16+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"index","method":"GET","url":"\/core\/js\/oc.js?v=e9aa58d8607a2de9531b0ac0d21f4871","message":"Exception: {\"Exception\":\"OC\\\\NeedsUpdateException\",\"Message\":\"\",\"Code\":0,\"Trace\":\"#0 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/legacy\\\/app.php(128): OC_App::loadApp('dav')\\n#1 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/legacy\\\/util.php(145): OC_App::loadApps(Array)\\n#2 \\\/var\\\/www\\\/owncloud\\\/lib\\\/base.php(928): OC_Util::setupFS()\\n#3 \\\/var\\\/www\\\/owncloud\\\/index.php(56): OC::handleRequest()\\n#4 {main}\",\"File\":\"\\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/legacy\\\/app.php\",\"Line\":192}"}
{"reqId":"9vDgDGPX6fvnCOFpRtbc","level":3,"time":"2017-12-07T18:25:28+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"index","method":"GET","url":"\/core\/js\/oc.js?v=e9aa58d8607a2de9531b0ac0d21f4871","message":"Exception: {\"Exception\":\"OC\\\\NeedsUpdateException\",\"Message\":\"\",\"Code\":0,\"Trace\":\"#0 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/legacy\\\/app.php(128): OC_App::loadApp('dav')\\n#1 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/legacy\\\/util.php(145): OC_App::loadApps(Array)\\n#2 \\\/var\\\/www\\\/owncloud\\\/lib\\\/base.php(928): OC_Util::setupFS()\\n#3 \\\/var\\\/www\\\/owncloud\\\/index.php(56): OC::handleRequest()\\n#4 {main}\",\"File\":\"\\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/legacy\\\/app.php\",\"Line\":192}"}
{"reqId":"dWb3NP40QocYIso7IhDj","level":3,"time":"2017-12-07T18:25:34+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"index","method":"GET","url":"\/core\/js\/oc.js?v=e9aa58d8607a2de9531b0ac0d21f4871","message":"Exception: {\"Exception\":\"OC\\\\NeedsUpdateException\",\"Message\":\"\",\"Code\":0,\"Trace\":\"#0 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/legacy\\\/app.php(128): OC_App::loadApp('dav')\\n#1 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/legacy\\\/util.php(145): OC_App::loadApps(Array)\\n#2 \\\/var\\\/www\\\/owncloud\\\/lib\\\/base.php(928): OC_Util::setupFS()\\n#3 \\\/var\\\/www\\\/owncloud\\\/index.php(56): OC::handleRequest()\\n#4 {main}\",\"File\":\"\\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/legacy\\\/app.php\",\"Line\":192}"}
{"reqId":"XjcgmJaJxkhEBqQc4KDP","level":3,"time":"2017-12-07T18:25:51+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"index","method":"GET","url":"\/core\/js\/oc.js?v=e9aa58d8607a2de9531b0ac0d21f4871","message":"Exception: {\"Exception\":\"OC\\\\NeedsUpdateException\",\"Message\":\"\",\"Code\":0,\"Trace\":\"#0 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/legacy\\\/app.php(128): OC_App::loadApp('dav')\\n#1 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/legacy\\\/util.php(145): OC_App::loadApps(Array)\\n#2 \\\/var\\\/www\\\/owncloud\\\/lib\\\/base.php(928): OC_Util::setupFS()\\n#3 \\\/var\\\/www\\\/owncloud\\\/index.php(56): OC::handleRequest()\\n#4 {main}\",\"File\":\"\\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/legacy\\\/app.php\",\"Line\":192}"}
{"reqId":"ylXt2yoPj777WV65xYsZ","level":3,"time":"2017-12-07T18:25:58+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"index","method":"GET","url":"\/core\/js\/oc.js?v=e9aa58d8607a2de9531b0ac0d21f4871","message":"Exception: {\"Exception\":\"OC\\\\NeedsUpdateException\",\"Message\":\"\",\"Code\":0,\"Trace\":\"#0 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/legacy\\\/app.php(128): OC_App::loadApp('dav')\\n#1 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/legacy\\\/util.php(145): OC_App::loadApps(Array)\\n#2 \\\/var\\\/www\\\/owncloud\\\/lib\\\/base.php(928): OC_Util::setupFS()\\n#3 \\\/var\\\/www\\\/owncloud\\\/index.php(56): OC::handleRequest()\\n#4 {main}\",\"File\":\"\\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/legacy\\\/app.php\",\"Line\":192}"}
{"reqId":"c2g7PTGwhYzSO77Oqctl","level":3,"time":"2017-12-07T18:26:45+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"index","method":"GET","url":"\/core\/js\/oc.js?v=e9aa58d8607a2de9531b0ac0d21f4871","message":"Exception: {\"Exception\":\"OC\\\\NeedsUpdateException\",\"Message\":\"\",\"Code\":0,\"Trace\":\"#0 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/legacy\\\/app.php(128): OC_App::loadApp('dav')\\n#1 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/legacy\\\/util.php(145): OC_App::loadApps(Array)\\n#2 \\\/var\\\/www\\\/owncloud\\\/lib\\\/base.php(928): OC_Util::setupFS()\\n#3 \\\/var\\\/www\\\/owncloud\\\/index.php(56): OC::handleRequest()\\n#4 {main}\",\"File\":\"\\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/legacy\\\/app.php\",\"Line\":192}"}
{"reqId":"bjL2BUtVn1StAQ7XK1Oz","level":3,"time":"2017-12-07T19:09:32+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"index","method":"GET","url":"\/core\/js\/oc.js?v=e9aa58d8607a2de9531b0ac0d21f4871","message":"Exception: {\"Exception\":\"OC\\\\NeedsUpdateException\",\"Message\":\"\",\"Code\":0,\"Trace\":\"#0 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/legacy\\\/app.php(128): OC_App::loadApp('dav')\\n#1 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/legacy\\\/util.php(145): OC_App::loadApps(Array)\\n#2 \\\/var\\\/www\\\/owncloud\\\/lib\\\/base.php(928): OC_Util::setupFS()\\n#3 \\\/var\\\/www\\\/owncloud\\\/index.php(56): OC::handleRequest()\\n#4 {main}\",\"File\":\"\\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/legacy\\\/app.php\",\"Line\":192}"}
{"reqId":"tlRqjGTUMXnSTKM45kdy","level":3,"time":"2017-12-07T19:09:40+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"index","method":"GET","url":"\/core\/js\/oc.js?v=e9aa58d8607a2de9531b0ac0d21f4871","message":"Exception: {\"Exception\":\"OC\\\\NeedsUpdateException\",\"Message\":\"\",\"Code\":0,\"Trace\":\"#0 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/legacy\\\/app.php(128): OC_App::loadApp('dav')\\n#1 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/legacy\\\/util.php(145): OC_App::loadApps(Array)\\n#2 \\\/var\\\/www\\\/owncloud\\\/lib\\\/base.php(928): OC_Util::setupFS()\\n#3 \\\/var\\\/www\\\/owncloud\\\/index.php(56): OC::handleRequest()\\n#4 {main}\",\"File\":\"\\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/legacy\\\/app.php\",\"Line\":192}"}
{"reqId":"CkUxdvFTimZlabFt7NL1","level":3,"time":"2017-12-07T19:10:02+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"index","method":"GET","url":"\/core\/js\/oc.js?v=e9aa58d8607a2de9531b0ac0d21f4871","message":"Exception: {\"Exception\":\"OC\\\\NeedsUpdateException\",\"Message\":\"\",\"Code\":0,\"Trace\":\"#0 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/legacy\\\/app.php(128): OC_App::loadApp('dav')\\n#1 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/legacy\\\/util.php(145): OC_App::loadApps(Array)\\n#2 \\\/var\\\/www\\\/owncloud\\\/lib\\\/base.php(928): OC_Util::setupFS()\\n#3 \\\/var\\\/www\\\/owncloud\\\/index.php(56): OC::handleRequest()\\n#4 {main}\",\"File\":\"\\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/legacy\\\/app.php\",\"Line\":192}"}
{"reqId":"EdwMMsSW1d8REHcA4DOl","level":3,"time":"2017-12-07T19:10:08+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"index","method":"GET","url":"\/core\/js\/oc.js?v=e9aa58d8607a2de9531b0ac0d21f4871","message":"Exception: {\"Exception\":\"OC\\\\NeedsUpdateException\",\"Message\":\"\",\"Code\":0,\"Trace\":\"#0 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/legacy\\\/app.php(128): OC_App::loadApp('dav')\\n#1 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/legacy\\\/util.php(145): OC_App::loadApps(Array)\\n#2 \\\/var\\\/www\\\/owncloud\\\/lib\\\/base.php(928): OC_Util::setupFS()\\n#3 \\\/var\\\/www\\\/owncloud\\\/index.php(56): OC::handleRequest()\\n#4 {main}\",\"File\":\"\\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/legacy\\\/app.php\",\"Line\":192}"}
{"reqId":"WtEaYGRLnqLUEhgjXzSU","level":3,"time":"2017-12-07T19:10:22+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"index","method":"GET","url":"\/core\/js\/oc.js?v=e9aa58d8607a2de9531b0ac0d21f4871","message":"Exception: {\"Exception\":\"OC\\\\NeedsUpdateException\",\"Message\":\"\",\"Code\":0,\"Trace\":\"#0 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/legacy\\\/app.php(128): OC_App::loadApp('dav')\\n#1 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/legacy\\\/util.php(145): OC_App::loadApps(Array)\\n#2 \\\/var\\\/www\\\/owncloud\\\/lib\\\/base.php(928): OC_Util::setupFS()\\n#3 \\\/var\\\/www\\\/owncloud\\\/index.php(56): OC::handleRequest()\\n#4 {main}\",\"File\":\"\\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/legacy\\\/app.php\",\"Line\":192}"}
{"reqId":"iDh00jUZgssR19eOCiHv","level":3,"time":"2017-12-07T19:11:17+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"index","method":"GET","url":"\/core\/js\/oc.js?v=e9aa58d8607a2de9531b0ac0d21f4871","message":"Exception: {\"Exception\":\"OC\\\\NeedsUpdateException\",\"Message\":\"\",\"Code\":0,\"Trace\":\"#0 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/legacy\\\/app.php(128): OC_App::loadApp('dav')\\n#1 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/legacy\\\/util.php(145): OC_App::loadApps(Array)\\n#2 \\\/var\\\/www\\\/owncloud\\\/lib\\\/base.php(928): OC_Util::setupFS()\\n#3 \\\/var\\\/www\\\/owncloud\\\/index.php(56): OC::handleRequest()\\n#4 {main}\",\"File\":\"\\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/legacy\\\/app.php\",\"Line\":192}"}
{"reqId":"ihr48JB1y6eQjfzhifbU","level":3,"time":"2017-12-07T19:11:21+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"index","method":"GET","url":"\/core\/js\/oc.js?v=e9aa58d8607a2de9531b0ac0d21f4871","message":"Exception: {\"Exception\":\"OC\\\\NeedsUpdateException\",\"Message\":\"\",\"Code\":0,\"Trace\":\"#0 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/legacy\\\/app.php(128): OC_App::loadApp('dav')\\n#1 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/legacy\\\/util.php(145): OC_App::loadApps(Array)\\n#2 \\\/var\\\/www\\\/owncloud\\\/lib\\\/base.php(928): OC_Util::setupFS()\\n#3 \\\/var\\\/www\\\/owncloud\\\/index.php(56): OC::handleRequest()\\n#4 {main}\",\"File\":\"\\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/legacy\\\/app.php\",\"Line\":192}"}
{"reqId":"ZVY9uOTO7tBLmiOiUWQC","level":0,"time":"2017-12-07T19:11:22+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"core","method":"GET","url":"\/core\/ajax\/update.php?requesttoken=ZHl2VxRtAEY%2BNExVeTo9WnsgABglWS0KMxdZBCULByM%3D%3AK59fGTR1hU5mHie6KiWrgltcuM4jtDkffEnsy39vmFE%3D","message":"starting upgrade from 10.0.3.3 to 10.0.4.4"}
{"reqId":"mo5RULvpU7xjuHSHjFpA","level":3,"time":"2017-12-07T19:14:40+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"PHP","method":"GET","url":"\/s\/Albo7Aa33aWL3YP","message":"Undefined index: server2serversharing at \/var\/www\/owncloud\/themes\/***REMOVED SENSITIVE VALUE***\/apps\/files_sharing\/templates\/public.php#78"}
{"reqId":"Zaz9ZmAWi9ChUoM9cHuO","level":3,"time":"2017-12-07T19:14:44+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"PHP","method":"GET","url":"\/s\/Albo7Aa33aWL3YP","message":"Undefined index: server2serversharing at \/var\/www\/owncloud\/themes\/***REMOVED SENSITIVE VALUE***\/apps\/files_sharing\/templates\/public.php#78"}
{"reqId":"QDlsIqTcAF9GYDA8muoI","level":3,"time":"2017-12-07T19:15:23+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"PHP","method":"GET","url":"\/s\/Albo7Aa33aWL3YP","message":"Undefined index: server2serversharing at \/var\/www\/owncloud\/themes\/***REMOVED SENSITIVE VALUE***\/apps\/files_sharing\/templates\/public.php#78"}
{"reqId":"CRPVOK1p9yJYq2nL6yiF","level":3,"time":"2017-12-07T19:15:37+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"PHP","method":"GET","url":"\/s\/Albo7Aa33aWL3YP","message":"Undefined index: server2serversharing at \/var\/www\/owncloud\/themes\/***REMOVED SENSITIVE VALUE***\/apps\/files_sharing\/templates\/public.php#78"}
{"reqId":"DSvnRBgOdLYfppkdfs9U","level":3,"time":"2017-12-07T19:15:46+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"PHP","method":"GET","url":"\/login","message":"include(layout.noscript.warning.php): failed to open stream: No such file or directory at \/var\/www\/owncloud\/themes\/***REMOVED SENSITIVE VALUE***\/core\/templates\/layout.guest.php#28"}
{"reqId":"DSvnRBgOdLYfppkdfs9U","level":3,"time":"2017-12-07T19:15:46+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"PHP","method":"GET","url":"\/login","message":"include(): Failed opening 'layout.noscript.warning.php' for inclusion (include_path='\/var\/www\/owncloud\/apps') at \/var\/www\/owncloud\/themes\/***REMOVED SENSITIVE VALUE***\/core\/templates\/layout.guest.php#28"}
{"reqId":"ulK25o2Nuxt8sVENW950","level":3,"time":"2017-12-07T19:17:59+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"admin","app":"PHP","method":"POST","url":"\/settings\/admin\/mailtest","message":"Automatically populating $HTTP_RAW_POST_DATA is deprecated and will be removed in a future version. To avoid this warning set 'always_populate_raw_post_data' to '-1' in php.ini and use the php:\/\/input stream instead. at Unknown#0"}
{"reqId":"XMEWHcjZBlKzdL3otRtG","level":3,"time":"2017-12-07T19:21:05+00:00","remoteAddr":"***REMOVED SENSITIVE VALUE***","user":"--","app":"PHP","method":"GET","url":"\/s\/Albo7Aa33aWL3YP","message":"Undefined index: server2serversharing at \/var\/www\/owncloud\/themes\/***REMOVED SENSITIVE VALUE***\/apps\/files_sharing\/templates\/public.php#78"}

Browser log

I don't think that there is an auto-update mechanism built into ownCloud.

It wasn't an auto update, just an update notification that blocked all access to the site. Every URL showed this screen, for all users: https://i.imgur.com/Mmn1EL3.png

I'd like to be able to control when updates get installed. I thought the 'updatechecker' option in config.php would disable these checks, so I'm not sure why I still got the notification.

I think the posted screenshot is already one step further then an update notification. To get to this state some one (maybe you, your admin or some other auto update mechanism on your operating system) has installed the new code of ownCloud. ownCloud is not doing this on its own, no matter what you're setting in the updatecheck option in the config.php