Windows® 10 - Forget Wi-Fi Connection
Notes:
- These instructions are for disconnecting and removing Wi-Fi credentials. Refer to Disconnect from a Wi-Fi Network to disconnect only.
- If your Windows operating system is unknown, refer to Determining Software Version - Windows.
- From the Windows desktop, navigate: Start
> Settings icon 
> Network & Internet.
Utilize the touchscreen (if available) or mouse to select on-screen options.
- Tap or click Wi-Fi, then tap or click Manage known networks.
If not available, refer to Microsoft's Manage wireless network profiles article and follow the instructions for 'Show all wireless profiles on the PC' and 'Delete a profile'.
- Tap or click the appropriate Wi-Fi network name.
- Tap or click Forget.
> Settings icon 
> Network & Internet.
Utilize the touchscreen (if available) or mouse to select on-screen options.
Related Topic: Add a Wi-Fi Network