0x800704CF – Network access not possible

Network resource not accessible.

Do not factory-reset a router speculatively or indiscriminately disable Wi-Fi security or a firewall. Get permission before changing someone else’s network.

Check whether Internet or just a specific network share is affected.
On a trusted private home network, check sharing permissions with the owner. Maintain the public profile on public networks.
Do not activate file and printer sharing across the board and do not turn off the firewall. For managed devices, contact IT.

Test after each step and stop when the issue is solved. Checkmarks are not permanently saved.