Permission & Access Issues

How to Fix SharePoint 403 Forbidden Errors with PnP PowerShell

Steve K Oct 21, 2026 869 views

Question details

The user needs to resolve an HTTP 403 Forbidden error that occurs when executing commands like Get-PnPWeb after connecting to a SharePoint site using PnP PowerShell.

How to Fix SharePoint 403 Errors with PnP PowerShell

Product: SharePoint
Device & OS: not provided
Scenario: Running automated scripts or connecting to a SharePoint site via PnP PowerShell to manage site resources and data.
Observed behavior: The connection command appears to succeed, but subsequent operations return an HTTP 403 Forbidden error due to multifactor authentication blocks or insufficient application access rights.

Before you start

Ensure you have the URL of the target SharePoint site and access to a user account with adequate administrative privileges, or access to the Microsoft Entra ID portal to review app permissions.

Solution 1Recommended

Authenticate Using Interactive Browser Login

Use this solution if your account has Multifactor Authentication (MFA) enabled, which blocks standard credential-based authentication in PowerShell.

Standard username and password parameters in PnP PowerShell will fail silently or trigger a 403 error when MFA is enforced. Bypassing this requires forcing an interactive web login prompt.

Open PowerShell

Launch your PowerShell console as an Administrator.

Run the Connect-PnPOnline Command

Execute the command using the web login parameter: Connect-PnPOnline -Url "https://yourtenant.sharepoint.com/sites/yoursite" -UseWebLogin

Complete Authentication

A browser window will appear. Enter your Microsoft 365 credentials and complete any multifactor authentication prompts.

Test the Connection

Run the Get-PnPWeb command to verify that the 403 Forbidden error is resolved and site details are returned.

Authenticate Using Interactive Browser Login

Alternative Parameter: If you are using the latest versions of PnP.PowerShell, you can also use the -Interactive parameter instead of -UseWebLogin for modern authentication flows.

Solution 2

Verify Application and Site.Selected Permissions

Apply this solution if you are authenticating via an Azure AD App Registration (App-Only authentication) rather than a user account.

Free Microsoft Office alternative

Streamline Your Document Workflow with WPS Office

While resolving SharePoint server-side permissions requires administrative troubleshooting, editing and collaborating on the documents stored there doesn't have to be complicated. WPS Office provides a lightweight, highly compatible, and free alternative to Microsoft Office, ensuring your team stays productive without software access issues.

1. Download the Installer: Visit the official WPS website to download the free suite for Windows, Mac, or Linux.
2. Open Your Office Documents: Directly open your .docx, .xlsx, and .pptx files synced from SharePoint without losing any complex formatting.
3. Edit and Share Easily: Use the familiar tools to edit your documents offline or collaborate using built-in cloud sharing features.

Fully compatible with Microsoft Word, Excel, and PowerPoint formats downloaded from SharePointLightweight application that prevents device slowdowns and crashesBuilt-in robust PDF editing, merging, and conversion toolsFamiliar tabbed user interface ensuring zero learning curve for new users

microsoft office alternative - wps office

Frequently Asked Questions

Why does Connect-PnPOnline succeed but Get-PnPWeb returns an HTTP 403 error?

Connect-PnPOnline only verifies your authentication against Azure Active Directory. It does not validate your authorization to the specific site. When Get-PnPWeb attempts to read the site data, SharePoint blocks the request with a 403 error if your account or application lacks the necessary site-level permissions.

Does Multifactor Authentication (MFA) block PnP PowerShell scripts?

Yes, if you use standard credentials (username and password) within your script, MFA policies will block the authentication attempt. You must bypass this by using the -UseWebLogin or -Interactive parameters to trigger a browser-based MFA prompt.

How do I fix PnP PowerShell 403 errors when using app-only authentication?

App-only authentication requires the Azure AD application to be granted explicit SharePoint API permissions. If you are using the principle of least privilege (Sites.Selected), you must also use Microsoft Graph to assign explicit read or write access to the specific target site.

Document & File Issues