Entra ID FileStorageContainer: Upsert Permissions Now Available — Streamline Access Management

WHAT JUST CHANGED: Upsert Permissions for fileStorageContainer

On June 2024, Microsoft released the Upsert permissions operation in Microsoft Graph (beta) for the fileStorageContainer resource. This allows Entra admins to create or update up to 10 permission objects on a fileStorageContainer in a single HTTP PATCH request using delta patch semantics. The feature is in Public Preview, available to all tenants with access to Graph beta endpoints.

• Feature Name: fileStorageContainer Upsert Permissions
• Effective Date: June 2024
• Status: Public Preview
• Tenants Affected: All tenants using Microsoft Graph beta APIs for file storage

WHO’S AFFECTED

If your organization uses custom apps, managed file storage, or delegated access scenarios via Entra ID and relies on fileStorageContainer permissions, this change is directly relevant. Admins with Application Administrator or Cloud Application Administrator roles will benefit the most. B2B/B2C external identities accessing file resources are also impacted, as permission management for guests becomes far less tedious.

WHY THIS DIRECTION IS BETTER

• Efficiency: Batch upsert allows 10 permissions in a single operation, drastically reducing roundtrips and API throttling risks compared to individual CRUD calls.
• Atomicity: Delta patch semantics ensure partial failures are minimized — admins can see exactly what changed and what failed.
• Consistency: Permissions are handled the same way for create/update, reducing errors and simplifying automation logic.
• Competitive Edge: Competing IdPs (Okta, Google Workspace) often lack batch permission upsert for file resources, making Entra ID more attractive for complex file sharing scenarios.
• Improved External ID Management: B2B/B2C guest lifecycle is easier to automate, especially for onboarding/offboarding workflows.

WHAT’S NEXT ON THE ROADMAP

• GA of Upsert Permissions: Microsoft is likely to move this operation to general availability in late 2024, based on adoption and feedback.
• Expanded Batch Support: Expect larger batch sizes, improved error handling, and eventual support in Microsoft.Graph PowerShell modules.
• Unified Permission Management: Microsoft continues to unify permission models across SharePoint, OneDrive, and custom file resources. Upcoming features will align fileStorageContainer permissions with SharePoint-style granularity and auditability.
• Entra External ID Improvements: Lifecycle automation for external users (guests, partners) is prioritized; watch for more granular controls and reporting in the admin center.
• Microsoft.Graph Beta to v1.0 Migration: As batch upsert matures, expect migration guidance for production workloads from beta to stable endpoints.

ADJACENT CHANGES TO NOTE

• Conditional Access for File Storage: Recent Conditional Access templates now allow targeting fileStorageContainer resources directly.
• Entra Admin Center UX: File storage permission auditing is now accessible under External Identities > File Storage.
• PowerShell Module Updates: Microsoft.Graph.Files support is expanding; watch for new cmdlets for permission batch upsert in coming releases.
• External Identity Guest Management: Bulk guest removal and reporting is now easier, with cross-resource permission visibility.

WHAT TO DO: Step-by-Step Admin Actions

1. Review your current fileStorageContainer permission configuration.
2. Identify scenarios (guest onboarding, project folders) where batch upsert can streamline operations.
3. Test the PATCH operation via Graph beta endpoint in a test tenant or sandbox environment.
4. Adjust automation scripts to use batch upsert instead of looping over single create/update calls.
5. Monitor for errors and partial failures during batch operations — log response codes and failures for compliance reporting.
6. Prepare for future GA migration by tagging beta scripts and documenting endpoints used.

CHECK IT YOURSELF: PowerShell Reporting Example

Use Microsoft.Graph PowerShell module (latest) to enumerate fileStorageContainer permissions and audit for stale or missing entries. This script is fully paginated and handles errors gracefully. Dry-run only — no modifications.

Import-Module Microsoft.Graph.Files
Connect-MgGraph -Scopes 'Files.Read.All', 'Directory.Read.All'
$containers = @()
$uri = 'https://graph.microsoft.com/beta/fileStorageContainers'
do {
    try {
        $response = Invoke-MgGraphRequest -Method GET -Uri $uri
        $containers += $response.value
        $uri = $response.'@odata.nextLink'
    } catch {
        Write-Error "Failed to fetch fileStorageContainers: $_"
        break
    }
} while ($uri)
foreach ($container in $containers) {
    $permUri = "https://graph.microsoft.com/beta/fileStorageContainers/$($container.id)/permissions"
    $permissions = @()
    do {
        try {
            $permResponse = Invoke-MgGraphRequest -Method GET -Uri $permUri
            $permissions += $permResponse.value
            $permUri = $permResponse.'@odata.nextLink'
        } catch {
            Write-Error "Failed to fetch permissions for container $($container.id): $_"
            break
        }
    } while ($permUri)
    Write-Output "Container $($container.id): $($permissions.Count) permissions"
    foreach ($perm in $permissions) {
        Write-Output "  - Permission Id: $($perm.id), Type: $($perm.type), GrantedTo: $($perm.grantedTo.user?.displayName)"
    }
}

This script reports on all fileStorageContainers in your tenant and their permissions, paginating results and handling errors without modification.

PORTAL PATH

• Navigate to Entra Admin Center > External Identities > File Storage.
• Select a fileStorageContainer to view and manage permissions.
• Use the new batch upsert interface under the Permissions tab (beta preview only).

BOTTOM LINE

Priority: If you manage file storage permissions for apps, guests, or external users, adopt batch upsert for efficiency and consistency. Start testing in beta, document endpoints, and prepare for GA migration. Audit your current permissions using PowerShell, and monitor roadmap updates for expanded batch support and unified permission management.