Your QB may display the Windows administrator permission required when you open the QB Point of Sale because:
Your Windows user might need permission to run QBPOS services.
The Windows UAC is preventing QBPOS services from running on your system.
You are using a damaged Windows user.
The installation of POS has got damaged.
If you need additional help resolving the QuickBooks this action requires administrator permissions, then call the toll-free number 1(855)-738-0359 and connect with experts.