Wireless Sharing Problem

Hello,

The fact that you could connect at first and then lost access points to Windows 11 changing its SMB sharing behavior rather than an Android issue. Windows often flips the active network profile from Private to Public, which blocks inbound SMB traffic, so check under Settings → Network & Internet → Properties that it’s still set to Private. Also confirm in wf.msc that the File and Printer Sharing (SMB-In) rules are enabled for the Private profile. Another common cause is protocol mismatch: many Android apps still default to SMB1, but Windows 11 disables SMB1 after updates. Run Get-WindowsOptionalFeature -Online -FeatureName SMB1Protocol in PowerShell; if it’s disabled, either enable it or switch to an app that supports SMB2/SMB3. Finally, make sure you’re connecting with a proper Windows account and password, because anonymous access is often blocked after updates. If you can ping the PC but not browse shares, it’s almost certainly SMB negotiation or firewall rules; if you can’t ping, then the router or Wi-Fi isolation is the issue. Correcting the profile, firewall, and SMB protocol usually restores access.

I hope you've found something useful here. If it helps you get more insight into the issue, it's appreciated to accept the answer. Should you have more questions, feel free to leave a message. Have a nice day!

Hoang Le.