How to Fix SharePoint Site Creation Errors with Custom Permissions
Question details
Users encounter unexpected errors, incorrect file names, or extra blank pages when creating a SharePoint site or page using a custom permission group.
- Product
- Microsoft SharePoint
- Device & OS
- not provided
- Scenario
- Creating a new site or page in SharePoint with customized user permissions instead of standard ones.
- Observed behavior
- The system generates an unexpected error, creates an additional blank page, or assigns a random file name (such as '1fvjfumm.aspx') instead of a file name matching the provided site title.
Ensure you have the necessary administrative privileges to view and modify site permissions in SharePoint, or have the contact information for your organization's Microsoft 365 administrator ready.
Compare Custom Permissions with the Standard Contribute Level
Verify if the issue is tied to the custom permission group by temporarily assigning standard Contribute permissions, which include delete rights.
When users lack delete permissions in SharePoint, the site or page creation workflow can break, resulting in mismatched file titles or blank pages.
Navigate to your SharePoint site, click on the Settings gear icon in the top right corner, and select 'Site permissions'.
Click on 'Advanced permissions settings' at the bottom of the panel to view the current permission levels assigned to your users.
Temporarily grant the affected user the standard 'Contribute' permission level to see if it resolves the creation error.
Ask the user to attempt creating the site or page again. If the site title and URL generate correctly (e.g., matching the intended title instead of random characters), the custom permission group is at fault.
Edit the custom permission group to include the necessary 'Delete Items' and 'Delete Versions' rights to prevent random file name generation.
Submit a Support Ticket via the Microsoft 365 Admin Center
If the issue persists even with the correct delete permissions, it may be a tenant-side or backend SharePoint glitch requiring Microsoft intervention.
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Frequently Asked Questions
Why does my new SharePoint page have a random file name like '1fvjfumm.aspx'?
This typically happens when the user creating the page is assigned to a custom permission group that lacks 'Delete' permissions. Without delete rights, SharePoint fails to correctly match the underlying file name to the site title you provide during creation.
Do I actually need delete permissions just to create a SharePoint page?
Yes, in many custom permission configurations, lacking the delete permission interrupts the standard page creation backend workflow, resulting in incorrect file names or unexpected blank pages being generated.
What should I do if the standard Contribute permission doesn't fix the issue?
If granting standard Contribute rights does not resolve the site creation errors, the problem is likely a backend tenant issue rather than a simple permission misconfiguration. You should contact your IT administrator to open a support ticket with Microsoft 365 support.
