Hello mike,
Thank you for posting in Q&A forum.
Here are several steps you can try:
1.Verify Network Settings and Sharing Options
Make sure that Computer 3 is configured as a Private network. In a Private network, Windows enables features like network discovery and file sharing by default.
On Computer 3 (and the computer hosting the shared folder), open Settings → Network & Internet → advanced network settings → advanced sharing settings and confirm the network type is set to Private.
Go to Advanced sharing settings (Control Panel → Network and Sharing Center → Change advanced sharing settings) and verify that “Turn on network discovery” and “Turn on file and printer sharing” are enabled.
- Verify IP Connectivity
Open Command Prompt on Computer 3 and try to ping the other computer by its IP address. For example: ping 192.168.1.x
If the ping fails, then there’s likely a network connectivity issue, such as misconfigured IP addresses or subnet masks. Ensure that all computers are on the same subnet and can “see” each other via IP.
3.On Computer 3 and the computer hosting the share, temporarily disable Windows Firewall or any third-party firewall/antivirus software to see if it resolves the problem.
4.Modern Windows versions have disabled SMBv1 by default. If your network devices or older shares depend on SMBv1, you might need to enable it—noting that SMBv1 has security concerns.
Go to Control Panel → Programs → Turn Windows features on or off.
5.Try mapping the share with the host computer’s IP address instead. For example, in File Explorer’s address bar, type: \192.168.1.x\SharedFolder
6.Ensure that necessary services are running. On both computers, type “services.msc” in the Run dialog and verify that the following services are running (Restart them if needed):
Function Discovery Provider Host
Function Discovery Resource Publication
SSDP Discovery
UPnP Device Host
7.Ensure the folder on the shared computer is correctly shared with the appropriate permissions.
8.Execute the “Network Reset” in Windows Settings (Settings → Network & Internet → Status → Network reset) as a last resort.
File sharing over a network in Windows
I hope the information above is helpful.
If you have any questions or concerns, please feel free to let us know.
Best Regards,
Daisy Zhou
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