System error 53 simply means your Windows 10 machine can't find the specified network path.
I would try the following:
1. Verify that NetBIOS is turned on on the XP machine
2. Turn off the Windows firewall temporarily on both machines to rule out that possible issue.
3. Make sure both machines are in the same workgroup (usually "workgroup", or "MS HOME")
4. In Control Panel > Network and Sharing Center > Advanced Sharing Settings > check "Enable file and print sharing for devices that use 40 or 56-bit encryption".
5. Does \\192.168.11.3 see the remote machine ? Does the reverse work, from the XP machine to Windows 10?
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