Add-PnPFile fails with "Access denied"

Question

I'm trying below code to add File to Site Pages -

Add-PnPFile -Path 'C:\Temp\myfile.aspx' -Folder "SitePages" but getting "Access denied" .

I have checked permissions for my user under https://acme.sharepoint.com/sites/my-site/_layouts/15/user.aspx and found that my user gets the "Deny Add and Customize Pages" message, which probably explains why I'm not allowed to run the Add-PnPFile command.

Why I am getting the Deny Add and Customize Pages message is what's puzzling me, though.

I've created a permission level called admin permissions in which every permission (including Add and Customize Pages) is checked, and created a group admins which use that permission level. I've added myself to that group, and made sure I'm not a member of any other groups (i.e. "Owners", "Members", "Visitors") on that site.

So why do I still get the "Access denied" error message when running Add-PnPFile? In my (powershell) script I've also added Set-SPOSite -Identity <path/to/site> -DenyAddAndCustomizePages $false but still no luck.

Any help in debugging this will be appreciated.

Answer 1

Please check if you have enabled custom script at tenant level via Classic SharePoint admin center > settings > Custom Script or via this link:

https://<tenant>-admin.sharepoint.com/_layouts/15/online/TenantSettings.aspx

It may take up to 24 hours for this setting to take effect in your tenant. Make sure you log in as a global admin.

Answer 2

This command did the trick for me:

Set-SPOsite <SiteURL> -DenyAddAndCustomizePages 0

Here, 0 means it's allowed.