[Bug]: User username still has unscanned files after running background scan, background scan might be stopped prematurely with disabled AD-User

⚠️ This issue respects the following points: ⚠️

• This is a bug, not a question or a configuration/webserver/proxy issue.
• This issue is not already reported on Github OR Nextcloud Community Forum (I've searched it).
• Nextcloud Server is up to date. See Maintenance and Release Schedule for supported versions.
• I agree to follow Nextcloud's Code of Conduct.

Bug description

This is maybe related to bug #43557

I am constantly getting warning message for one of my disabled AD users while scanning external SMB-Share:
User username still has unscanned files after running background scan, background scan might be stopped prematurely
and
InvalidArgumentException Invalid request for /myProject/Folder in apps/files_external/3rdparty/icewind/smb/src/Native/NativeState.php
And this happens multiple times per hour and spams the log.

Steps to reproduce

1. Add external SMB-Share
2. Save credentials for user in DB
3. Scan files once successfully
4. Disable user in AD and Nextcloud

Expected behavior

Do not scan files for disabled users.

Nextcloud Server version

31

Operating system

Debian/Ubuntu

PHP engine version

PHP 8.1

Web server

Apache (supported)

Database engine version

MariaDB

Is this bug present after an update or on a fresh install?

None

Are you using the Nextcloud Server Encryption module?

None

What user-backends are you using?

• Default user-backend (database)
• LDAP/ Active Directory
• SSO - SAML
• Other

Configuration report

List of activated Apps

Nextcloud Signing status

Nextcloud Logs

{
  "reqId": "uCnIU7zHEddNZfXmMHYY",
  "level": 3,
  "time": "2025-10-20T14:50:36+00:00",
  "remoteAddr": "",
  "user": "--",
  "app": "files",
  "method": "",
  "url": "--",
  "message": "Error while trying to scan mount as /00000000-0000-0000-0000-000000000001/files/smbshare/:Invalid request for /myProject/Folder (InvalidArgumentException)",
  "userAgent": "--",
  "version": "31.0.9.1",
  "exception": {
    "Exception": "Icewind\\SMB\\Exception\\InvalidArgumentException",
    "Message": "Invalid request for /myProject/Folder (InvalidArgumentException)",
    "Code": 22,
    "Trace": [
      {
        "file": "/var/www/nextcloud/apps/files_external/3rdparty/icewind/smb/src/Native/NativeState.php",
        "line": 74,
        "function": "fromMap",
        "class": "Icewind\\SMB\\Exception\\Exception",
        "type": "::"
      },
      {
        "file": "/var/www/nextcloud/apps/files_external/3rdparty/icewind/smb/src/Native/NativeState.php",
        "line": 91,
        "function": "handleError",
        "class": "Icewind\\SMB\\Native\\NativeState",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/apps/files_external/3rdparty/icewind/smb/src/Native/NativeState.php",
        "line": 245,
        "function": "testResult",
        "class": "Icewind\\SMB\\Native\\NativeState",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/apps/files_external/3rdparty/icewind/smb/src/Native/NativeShare.php",
        "line": 122,
        "function": "stat",
        "class": "Icewind\\SMB\\Native\\NativeState",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/apps/files_external/3rdparty/icewind/smb/src/Native/NativeFileInfo.php",
        "line": 43,
        "function": "rawStat",
        "class": "Icewind\\SMB\\Native\\NativeShare",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/apps/files_external/3rdparty/icewind/smb/src/Native/NativeFileInfo.php",
        "line": 49,
        "function": "stat",
        "class": "Icewind\\SMB\\Native\\NativeFileInfo",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/apps/files_external/3rdparty/icewind/smb/src/Native/NativeShare.php",
        "line": 113,
        "function": "getSize",
        "class": "Icewind\\SMB\\Native\\NativeFileInfo",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/apps/files_external/lib/Lib/Storage/SMB.php",
        "line": 166,
        "function": "stat",
        "class": "Icewind\\SMB\\Native\\NativeShare",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/apps/files_external/lib/Lib/Storage/SMB.php",
        "line": 535,
        "function": "getFileInfo",
        "class": "OCA\\Files_External\\Lib\\Storage\\SMB",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/lib/private/Files/Storage/Wrapper/Wrapper.php",
        "line": 293,
        "function": "getMetaData",
        "class": "OCA\\Files_External\\Lib\\Storage\\SMB",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/lib/private/Files/Storage/Wrapper/Availability.php",
        "line": 238,
        "function": "getMetaData",
        "class": "OC\\Files\\Storage\\Wrapper\\Wrapper",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/lib/private/Files/Storage/Wrapper/Wrapper.php",
        "line": 293,
        "function": "getMetaData",
        "class": "OC\\Files\\Storage\\Wrapper\\Availability",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/lib/private/Files/Cache/Scanner.php",
        "line": 98,
        "function": "getMetaData",
        "class": "OC\\Files\\Storage\\Wrapper\\Wrapper",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/lib/private/Files/Cache/Scanner.php",
        "line": 139,
        "function": "getData",
        "class": "OC\\Files\\Cache\\Scanner",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/lib/private/Files/Cache/Scanner.php",
        "line": 320,
        "function": "scanFile",
        "class": "OC\\Files\\Cache\\Scanner",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/lib/private/Files/Cache/Scanner.php",
        "line": 587,
        "function": "scan",
        "class": "OC\\Files\\Cache\\Scanner",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/lib/private/Files/Cache/Scanner.php",
        "line": 599,
        "function": "OC\\Files\\Cache\\{closure}",
        "class": "OC\\Files\\Cache\\Scanner",
        "type": "->",
        "args": [
          "*** sensitive parameters replaced ***"
        ]
      },
      {
        "file": "/var/www/nextcloud/lib/private/Files/Cache/Scanner.php",
        "line": 586,
        "function": "runBackgroundScanJob",
        "class": "OC\\Files\\Cache\\Scanner",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/lib/private/Files/Utils/Scanner.php",
        "line": 168,
        "function": "backgroundScan",
        "class": "OC\\Files\\Cache\\Scanner",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/apps/files/lib/Command/Scan.php",
        "line": 162,
        "function": "backgroundScan",
        "class": "OC\\Files\\Utils\\Scanner",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/apps/files/lib/Command/Scan.php",
        "line": 262,
        "function": "scanFiles",
        "class": "OCA\\Files\\Command\\Scan",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/3rdparty/symfony/console/Command/Command.php",
        "line": 326,
        "function": "execute",
        "class": "OCA\\Files\\Command\\Scan",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/core/Command/Base.php",
        "line": 213,
        "function": "run",
        "class": "Symfony\\Component\\Console\\Command\\Command",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/3rdparty/symfony/console/Application.php",
        "line": 1078,
        "function": "run",
        "class": "OC\\Core\\Command\\Base",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/3rdparty/symfony/console/Application.php",
        "line": 324,
        "function": "doRunCommand",
        "class": "Symfony\\Component\\Console\\Application",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/3rdparty/symfony/console/Application.php",
        "line": 175,
        "function": "doRun",
        "class": "Symfony\\Component\\Console\\Application",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/lib/private/Console/Application.php",
        "line": 187,
        "function": "run",
        "class": "Symfony\\Component\\Console\\Application",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/console.php",
        "line": 87,
        "function": "run",
        "class": "OC\\Console\\Application",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/occ",
        "line": 33,
        "args": [
          "/var/www/nextcloud/console.php"
        ],
        "function": "require_once"
      }
    ],
    "File": "/var/www/nextcloud/apps/files_external/3rdparty/icewind/smb/src/Exception/Exception.php",
    "Line": 43,
    "message": "Error while trying to scan mount as /00000000-0000-0000-0000-000000000001/files/smbshare/:Invalid request for /myProject/Folder (InvalidArgumentException)",
    "exception": [],
    "CustomMessage": "Error while trying to scan mount as /00000000-0000-0000-0000-000000000001/files/smbshare/:Invalid request for /myProject/Folder (InvalidArgumentException)"
  },
  "id": "68f64c5a637bb"
}

Additional info

The connection to the smb share fails, because the user is disabled.

Edit: Do not use this patch.

I've developed a patch to omit scans for disabled users, see attached file.

__Fix_background_scan_for_disabled_users2.patch

Start with the background-scan flow in lib/private/Files/Cache/Scanner.php and apps/files/lib/Command/Scan.php, then trace external SMB handling through apps/files_external/lib/Lib/Storage/SMB.php and the NativeState.php stack-trace entry. Compare how disabled users reach the scan and verify that disabled-user mounts are skipped without leaving unscanned-file warnings or repeated SMB errors.