Extra file found during update check

Nextcloud version (eg, 29.0.5) : 27.02
Operating system and version (eg, Ubuntu 24.04) : Linux 5.15.0-117-generic x86_64
Apache or nginx version (eg, Apache 2.4.25) : Apache/2.4.52
PHP version (eg, 8.3) : 8.1.2-1ubuntu2.18

The issue you are facing:
index.nginx-debian.html was found during update check.
find -name index.nginx-debian.html doesn’t show any results.

Is this the first time you’ve seen this error? X(Y/N)_:

Steps to replicate it:

  1. Retry update

The output of your Nextcloud log in Admin > Logging:

No errors for this issue found here.

The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):

<?php
$CONFIG = array (
  'instanceid' => 'REMOVED',
  'passwordsalt' => 'REMOVED',
  'secret' => 'REMOVED',
  'trusted_domains' =>
  array (
    0 => 'REMOVED',
    1 => '172.30.1.110',
  ),
  'trusted_proxies' =>
  array (
    0 => '172.30.1.114',
  ),
  'overwrite.cli.url' => '',
  'overwritehost' => '',
  'overwriteprotocol' => 'https',
  'htaccess.RewriteBase' => '/',
  'datadirectory' => '/mnt/nasdata',
  'dbtype' => 'mysql',
  'version' => '27.0.2.1',
  'dbname' => 'nextcloud',
  'dbhost' => 'localhost',
  'dbport' => '',
  'dbtableprefix' => 'oc_',
  'mysql.utf8mb4' => true,
  'dbuser' => 'ncadmin',
  'dbpassword' => '',
  'installed' => true,
  'maintenance' => false,
  'twofactor_enforced' => 'true',
  'twofactor_enforced_groups' =>
  array (
    0 => 'admin',
    1 => 'Users',
  ),
  'twofactor_enforced_excluded_groups' =>
  array (
  ),
  'mail_smtpmode' => 'smtp',
  'mail_sendmailmode' => 'smtp',
  'mail_from_address' => 'REMOVED',
  'mail_domain' => 'gmail.com',
  'mail_smtphost' => 'smtp.gmail.com',
  'mail_smtpport' => '465',
  'mail_smtpauth' => 1,
  'mail_smtpname' => 'REMOVED',
  'mail_smtppassword' => 'REMOVED',
  'mail_smtpsecure' => 'ssl',
  'updater.secret' => 'REMOVED',
);

The output of your Apache/nginx/system log in /var/log/____:

Aug  1 18:21:52 nextcloud systemd[1102]: Startup finished in 240ms.
Aug  1 18:21:52 nextcloud systemd[1]: Started Session 3 of User hiveadmin.
Aug  1 18:22:49 nextcloud kernel: [  112.141838] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:50:c7:bf:26:f6:cc:08:00 SRC=172.30.1.1 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0x00 TTL=1 ID=0 DF PROTO=2 
Aug  1 18:24:54 nextcloud kernel: [  237.270007] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:50:c7:bf:26:f6:cc:08:00 SRC=172.30.1.1 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0x00 TTL=1 ID=0 DF PROTO=2 
Aug  1 18:26:18 nextcloud systemd[1]: Starting Download data for packages that failed at package install time...
Aug  1 18:26:18 nextcloud systemd[1]: update-notifier-download.service: Deactivated successfully.
Aug  1 18:26:18 nextcloud systemd[1]: Finished Download data for packages that failed at package install time.
Aug  1 18:26:19 nextcloud dbus-daemon[740]: [system] Activating via systemd: service name='org.freedesktop.timedate1' unit='dbus-org.freedesktop.timedate1.service' requested by ':1.11' (uid=0 pid=755 comm="/usr/lib/snapd/snapd " label="unconfined")
Aug  1 18:26:19 nextcloud systemd[1]: Starting Time & Date Service...
Aug  1 18:26:19 nextcloud dbus-daemon[740]: [system] Successfully activated service 'org.freedesktop.timedate1'
Aug  1 18:26:19 nextcloud systemd[1]: Started Time & Date Service.
Aug  1 18:26:49 nextcloud systemd[1]: systemd-timedated.service: Deactivated successfully.
Aug  1 18:26:59 nextcloud kernel: [  362.327010] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:50:c7:bf:26:f6:cc:08:00 SRC=172.30.1.1 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0x00 TTL=1 ID=0 DF PROTO=2 
Aug  1 18:29:04 nextcloud kernel: [  487.015697] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:50:c7:bf:26:f6:cc:08:00 SRC=172.30.1.1 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0x00 TTL=1 ID=0 DF PROTO=2 
Aug  1 18:31:09 nextcloud kernel: [  612.142082] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:50:c7:bf:26:f6:cc:08:00 SRC=172.30.1.1 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0x00 TTL=1 ID=0 DF PROTO=2 
Aug  1 18:33:14 nextcloud kernel: [  737.262031] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:50:c7:bf:26:f6:cc:08:00 SRC=172.30.1.1 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0x00 TTL=1 ID=0 DF PROTO=2 
Aug  1 18:35:19 nextcloud kernel: [  862.388211] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:50:c7:bf:26:f6:cc:08:00 SRC=172.30.1.1 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0x00 TTL=1 ID=0 DF PROTO=2 

Output errors in nextcloud.log in /var/www/ or as admin user in top right menu, filtering for errors. Use a pastebin service if necessary.

No errors for this issue found here.

The file in question has been found in the Nextcloud document root directory of your Nextcloud installation, where you also find the ./3rdparty, ./apps or ./ocs-provider folders, and needs to be removed. The reason why your search might not have found the file seems to be, that you haven’t a start path for searching.

Hm it doesn’t seem to be there?

hiveadmin@nextcloud:~$ sudo find ./ -name *.html
./nextcloud/core/doc/user/webinterface.html
./nextcloud/core/doc/user/universal_access.html
./nextcloud/core/doc/user/contents.html
./nextcloud/core/doc/user/external_storage/external_storage.html
./nextcloud/core/doc/user/external_storage/index.html
./nextcloud/core/doc/user/user_2fa.html
./nextcloud/core/doc/user/whats_new.html
./nextcloud/core/doc/user/session_management.html
./nextcloud/core/doc/user/search.html
./nextcloud/core/doc/user/index.html
./nextcloud/core/doc/user/genindex.html
./nextcloud/core/doc/user/talk/join_a_call_or_chat_as_guest.html
./nextcloud/core/doc/user/talk/talk_basics.html
./nextcloud/core/doc/user/talk/index.html
./nextcloud/core/doc/user/talk/advanced_features.html
./nextcloud/core/doc/user/userpreferences.html
./nextcloud/core/doc/user/files/large_file_upload.html
./nextcloud/core/doc/user/files/version_control.html
./nextcloud/core/doc/user/files/transfer_ownership.html
./nextcloud/core/doc/user/files/desktop_mobile_sync.html
./nextcloud/core/doc/user/files/encrypting_files.html
./nextcloud/core/doc/user/files/index.html
./nextcloud/core/doc/user/files/access_webgui.html
./nextcloud/core/doc/user/files/deleted_file_management.html
./nextcloud/core/doc/user/files/quota.html
./nextcloud/core/doc/user/files/sharing.html
./nextcloud/core/doc/user/files/projects.html
./nextcloud/core/doc/user/files/federated_cloud_sharing.html
./nextcloud/core/doc/user/files/access_webdav.html
./nextcloud/core/doc/user/files/file_drop.html
./nextcloud/core/doc/user/groupware/sync_windows10.html
./nextcloud/core/doc/user/groupware/sync_ios.html
./nextcloud/core/doc/user/groupware/sync_thunderbird.html
./nextcloud/core/doc/user/groupware/sync_android.html
./nextcloud/core/doc/user/groupware/sync_gnome.html
./nextcloud/core/doc/user/groupware/index.html
./nextcloud/core/doc/user/groupware/sync_kde.html
./nextcloud/core/doc/user/groupware/mail.html
./nextcloud/core/doc/user/groupware/contacts.html
./nextcloud/core/doc/user/groupware/calendar.html
./nextcloud/core/doc/user/groupware/sync_osx.html
./nextcloud/core/doc/admin/configuration_database/linux_database_configuration.html
./nextcloud/core/doc/admin/configuration_database/mysql_4byte_support.html
./nextcloud/core/doc/admin/configuration_database/db_conversion.html
./nextcloud/core/doc/admin/configuration_database/index.html
./nextcloud/core/doc/admin/configuration_database/bigint_identifiers.html
./nextcloud/core/doc/admin/configuration_database/splitting.html
./nextcloud/core/doc/admin/reference/link_previews.html
./nextcloud/core/doc/admin/reference/index.html
./nextcloud/core/doc/admin/reference/smart_picker.html
./nextcloud/core/doc/admin/installation/nginx.html
./nextcloud/core/doc/admin/installation/source_installation.html
./nextcloud/core/doc/admin/installation/system_requirements.html
./nextcloud/core/doc/admin/installation/example_centos.html
./nextcloud/core/doc/admin/installation/selinux_configuration.html
./nextcloud/core/doc/admin/installation/harden_server.html
./nextcloud/core/doc/admin/installation/installation_wizard.html
./nextcloud/core/doc/admin/installation/apps_supported.html
./nextcloud/core/doc/admin/installation/server_tuning.html
./nextcloud/core/doc/admin/installation/index.html
./nextcloud/core/doc/admin/installation/deployment_recommendations.html
./nextcloud/core/doc/admin/installation/command_line_installation.html
./nextcloud/core/doc/admin/installation/example_openbsd.html
./nextcloud/core/doc/admin/installation/example_ubuntu.html
./nextcloud/core/doc/admin/configuration_user/user_provisioning_api.html
./nextcloud/core/doc/admin/configuration_user/user_auth_ldap_api.html
./nextcloud/core/doc/admin/configuration_user/instruction_set_for_users.html
./nextcloud/core/doc/admin/configuration_user/profile_configuration.html
./nextcloud/core/doc/admin/configuration_user/reset_admin_password.html
./nextcloud/core/doc/admin/configuration_user/user_password_policy.html
./nextcloud/core/doc/admin/configuration_user/user_auth_ldap.html
./nextcloud/core/doc/admin/configuration_user/index.html
./nextcloud/core/doc/admin/configuration_user/reset_user_password.html
./nextcloud/core/doc/admin/configuration_user/user_auth_ftp_smb_imap.html
./nextcloud/core/doc/admin/configuration_user/instruction_set_for_apps.html
./nextcloud/core/doc/admin/configuration_user/user_auth_ldap_cleanup.html
./nextcloud/core/doc/admin/configuration_user/two_factor-auth.html
./nextcloud/core/doc/admin/configuration_user/instruction_set_for_groups.html
./nextcloud/core/doc/admin/configuration_user/user_configuration.html
./nextcloud/core/doc/admin/file_workflows/retention.html
./nextcloud/core/doc/admin/file_workflows/configuration.html
./nextcloud/core/doc/admin/file_workflows/automated_tagging.html
./nextcloud/core/doc/admin/file_workflows/index.html
./nextcloud/core/doc/admin/file_workflows/access_control.html
./nextcloud/core/doc/admin/issues/applying_patch.html
./nextcloud/core/doc/admin/issues/general_troubleshooting.html
./nextcloud/core/doc/admin/issues/index.html
./nextcloud/core/doc/admin/issues/code_signing.html
./nextcloud/core/doc/admin/gdpr/index.html
./nextcloud/core/doc/admin/gdpr/cookies.html
./nextcloud/core/doc/admin/contents.html
./nextcloud/core/doc/admin/configuration_server/language_configuration.html
./nextcloud/core/doc/admin/configuration_server/text_configuration.html
./nextcloud/core/doc/admin/configuration_server/domain_change.html
./nextcloud/core/doc/admin/configuration_server/occ_command.html
./nextcloud/core/doc/admin/configuration_server/email_configuration.html
./nextcloud/core/doc/admin/configuration_server/bruteforce_configuration.html
./nextcloud/core/doc/admin/configuration_server/antivirus_configuration.html
./nextcloud/core/doc/admin/configuration_server/config_sample_php_parameters.html
./nextcloud/core/doc/admin/configuration_server/reverse_proxy_configuration.html
./nextcloud/core/doc/admin/configuration_server/index.html
./nextcloud/core/doc/admin/configuration_server/oauth2.html
./nextcloud/core/doc/admin/configuration_server/caching_configuration.html
./nextcloud/core/doc/admin/configuration_server/theming.html
./nextcloud/core/doc/admin/configuration_server/background_jobs_configuration.html
./nextcloud/core/doc/admin/configuration_server/security_setup_warnings.html
./nextcloud/core/doc/admin/configuration_server/logging_configuration.html
./nextcloud/core/doc/admin/configuration_server/external_sites.html
./nextcloud/core/doc/admin/configuration_server/automatic_configuration.html
./nextcloud/core/doc/admin/configuration_server/activity_configuration.html
./nextcloud/core/doc/admin/configuration_server/admin_delegation_configuration.html
./nextcloud/core/doc/admin/release_notes/index.html
./nextcloud/core/doc/admin/release_notes/upgrade_to_26.html
./nextcloud/core/doc/admin/release_notes/upgrade_to_27.html
./nextcloud/core/doc/admin/office/configuration.html
./nextcloud/core/doc/admin/office/example-ubuntu.html
./nextcloud/core/doc/admin/office/example-docker.html
./nextcloud/core/doc/admin/office/migration.html
./nextcloud/core/doc/admin/office/index.html
./nextcloud/core/doc/admin/office/proxy.html
./nextcloud/core/doc/admin/office/troubleshooting.html
./nextcloud/core/doc/admin/office/installation.html
./nextcloud/core/doc/admin/search.html
./nextcloud/core/doc/admin/index.html
./nextcloud/core/doc/admin/genindex.html
./nextcloud/core/doc/admin/apps_management.html
./nextcloud/core/doc/admin/release_schedule.html
./nextcloud/core/doc/admin/configuration_mimetypes/index.html
./nextcloud/core/doc/admin/release_notes.html
./nextcloud/core/doc/admin/maintenance/migrating_owncloud.html
./nextcloud/core/doc/admin/maintenance/update.html
./nextcloud/core/doc/admin/maintenance/manual_upgrade.html
./nextcloud/core/doc/admin/maintenance/index.html
./nextcloud/core/doc/admin/maintenance/package_upgrade.html
./nextcloud/core/doc/admin/maintenance/restore.html
./nextcloud/core/doc/admin/maintenance/upgrade.html
./nextcloud/core/doc/admin/maintenance/backup.html
./nextcloud/core/doc/admin/maintenance/migrating.html
./nextcloud/core/doc/admin/ai/index.html
./nextcloud/core/doc/admin/configuration_files/file_sharing_configuration.html
./nextcloud/core/doc/admin/configuration_files/federated_cloud_sharing_configuration.html
./nextcloud/core/doc/admin/configuration_files/files_locking_transactional.html
./nextcloud/core/doc/admin/configuration_files/previews_configuration.html
./nextcloud/core/doc/admin/configuration_files/encryption_details.html
./nextcloud/core/doc/admin/configuration_files/big_file_upload_configuration.html
./nextcloud/core/doc/admin/configuration_files/external_storage/ftp.html
./nextcloud/core/doc/admin/configuration_files/external_storage/amazons3.html
./nextcloud/core/doc/admin/configuration_files/external_storage/webdav.html
./nextcloud/core/doc/admin/configuration_files/external_storage/nextcloud.html
./nextcloud/core/doc/admin/configuration_files/external_storage/local.html
./nextcloud/core/doc/admin/configuration_files/external_storage/sftp.html
./nextcloud/core/doc/admin/configuration_files/external_storage/smb.html
./nextcloud/core/doc/admin/configuration_files/external_storage/auth_mechanisms.html
./nextcloud/core/doc/admin/configuration_files/external_storage/openstack.html
./nextcloud/core/doc/admin/configuration_files/default_files_configuration.html
./nextcloud/core/doc/admin/configuration_files/primary_storage.html
./nextcloud/core/doc/admin/configuration_files/index.html
./nextcloud/core/doc/admin/configuration_files/trashbin_configuration.html
./nextcloud/core/doc/admin/configuration_files/encryption_migration.html
./nextcloud/core/doc/admin/configuration_files/external_storage_configuration_gui.html
./nextcloud/core/doc/admin/configuration_files/file_versioning.html
./nextcloud/core/doc/admin/configuration_files/encryption_configuration.html
./nextcloud/core/doc/admin/groupware/index.html
./nextcloud/core/doc/admin/groupware/mail.html
./nextcloud/core/doc/admin/groupware/contacts.html
./nextcloud/core/doc/admin/groupware/calendar.html
./nextcloud/core/templates/tags.html
./nextcloud/core/templates/filepicker.html
./nextcloud/core/templates/message.html
./nextcloud/apps/files_pdfviewer/js/pdfjs/web/viewer.html
./nextcloud/apps/text/index.html
./nextcloud/apps/files/templates/fileexists.html
./nextcloud/index.html

Are you sure /home/hiveadmin/nextcloud is the real active Nextcloud installation folder? That would be a highly unusual place to have things installed. The named file is actually a default index file provided by Debian. I’d expect your installation folder to be someplace more like /var/www.

EDIT: You might check /mnt/nasdata/updater.log for some hints about your actual installation folder, at least from the Nextcloud Updater’s perspective.

Ah yes you are correct /var/www/html is the install location.

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