LAN remains connected but unable to open LAN pc until restart

By Parag Gupta
Oct 19, 2015
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  1. I have a network wherein I have only 3 desktop pcs. PC1 & PC3 has no issue in opening each other’s files/directories but my problem lies with PC 2. Occasionally, while working it happens that I am able to open files/directories of PC1 & PC3 by PC2 but not vice versa. This problem gets resolved on restarting PC2. I have updated Realtek drivers & using Windows 7 on PC 2 & PC3 but is using Windows XP on PC1.
  2. jobeard

    jobeard TS Ambassador Posts: 11,177   +990

    You need the XP system firewall to enable sharing and NOT allow UPnP changes from programs on that system. In Services, disable UPnP Device Host.
  3. Parag Gupta

    Parag Gupta TS Rookie Topic Starter

    Respected Sir

    I think I was unable to explain problem properly in my earlier post. Now I have analysed and found that Say I have three desktop PCs. PC1 & PC2 are window 7 pcs although PC3 is window XP pc. I have shared drives in all three of them with everyone & has allowed all changes in security option. Although networking & sharing works fine but occasionally I am not able to open files on PC3 from PC1 & PC2, although vice versa is happening. Also there is no problem in PC1 & PC2.

    This problem gets resolved only when I restart my all three pcs & not just PC3.

    I have tried changing network cables & am using Avast Antivirus on PC3 & Bitdefender Antivirus on PC1 & PC2. The problem was not resolved even when I had switched off firewall. I am using DLink as modem router & UPnP is enabled in this router's settings.


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