Windows Firewall is causing this error
First, you need to disable Windows Firewall.
Step #1 - Disable any other firewall you may have installed and stop it from loading at boot and then restart.
Step #2 - Go to the Admin Tools Folder > Services > Windows Firewall > Double click and either set it to Manual or Automatic and Save.
Step #3 - Open Control Panel > System & Security > Windows Firewall > Turn Windows Firewall On or Off > (Enable) Turn on Windows Firewall > Save
Step #4 - Click Control Panel Home > View Devices & Printers > Select/Click your Printer > Display Printer Properties > Sharing > Share this Printer > OK
Step #5 - Go Back to Windows Firewall and Turn it back off > Save
Step #6 - Go Back to Services > And set Windows Firewall to Manual
Step #7 - Restart & Re-enable your preferred firewall to start at Boot > then restart.
Check out this link: https://windowsfreeapps.com/fix-error-0x000006d9-when-sharing-a-printer-on-a-computer-windows-7/
Edited by daikin, 28 June 2017 - 11:24 AM.