Getting Access Denied error while checking out Master Page Gallery using pnp C# code

[vvenkataratnam]

Category

• Error

Describe the error

I am using SharepointPnpCoreOnline library (2.11.1701.1) to provision a new site collection, which was working fine for the past 6+ years and started giving the error

Error: Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))

recently.

Steps to reproduce

 using (var repositoryContext = new AuthenticationManager().GetAppOnlyAuthenticatedContext(
     templatesSiteUrl,
     clientId,
     clientSecret))  {

  var mpgallery = web.GetListByTitle("Master Page Gallery");   mpgallery.ForceCheckout = true;   mpgallery.Update();   web.Context.ExecuteQueryRetry();

Expected behavior

Supposed to checkout the master page gallery and upload the js/css files

• Framework: [e.g. .NET Framework v4.8]
• Browser(s): [e.g. Chrome v79 | Safari v22 | FireFox v31 | Chromium Edge v79]
• Tooling: Visual Studio 2022

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[jansenbe]

@vvenkataratnam : SharePointPnPCoreOnline library is something we retired a long time ago. PnP Framework is the latest version of this. I'll move your issue over to that repo, but best is to upgrade your app to the latest and verify things still work. Also, looking at your code snippet you're using Azure ACS, something Microsoft is retiring as well, best setup an Azure AD app and use that going forward.