1. How to enable file sharing between Windows XP (SP3) and Windows 8.1?
I can able to access my Windows XP files from Windows 8.
Better forum for your question is general public forum here
If you insist on staying here, lower the SMB on W 8.1 to match that of W XP. Although play with autotuning, etc NIC parameters.
In Windows XP use Properties of folder where are both, permissions and sharing. For Windows 8.1 follow article
Remember that security is local to every computer in workgroup.
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