Final answer:
The error message 'You don't have permission to access this page or perform this action' is likely caused by a permission issue. Contact your IT administrator or support team to resolve it.
Step-by-step explanation:
The cause of the error message 'You don't have permission to access this page or perform this action' when trying to create a support request in Microsoft Business Products is likely a permission issue. This means that your user account does not have the necessary permissions to perform the requested action.
To resolve this, you should contact your IT administrator or support team to grant you the appropriate permissions.