Performance: Intermittent Sharepoint Access Issue
There is no workaround for this issue
Microsoft has reported an issue in which some customers are intermittently seeing an error message that says "Sorry, you don't have access to this page" when attempting to navigate to SharePoint Online pages. \nAs the issue is intermittent, affected users can reattempt navigation as subsequent attempts may succeed. \nMicrosoft engineers are currently working on restoring the service.