For some instances that our printers do not appear on Microsoft Excel only,
Please do the following steps to enable:
1. Open Regedit.
2. Go to HKEY_CURRENT_USER -> software -> Microsoft -> WindowsNT ->
3. Here you find the three folder Devices , Printer Ports and Windows
4. Right click on every folder and give the full permission for the user in which you show this problem
5. Restart the system
6. And reinstall the printer.